diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md
index 0d2b1edae7..badbdef1d5 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -14,6 +14,11 @@ https://invoiceninja.github.io/docs/self-host-troubleshooting/ -->
 - Version: <!-- i.e. v4.5.25 / v5.0.30 -->
 - Environment: <!-- Docker/Shared Hosting/ZIP/Other -->
 
+## Interface
+- Flutter: []
+- React: []
+- Both: []
+
 ## Checklist
 - Can you replicate the issue on our v5 demo site https://demo.invoiceninja.com or https://react.invoicing.co/demo?
 - Have you searched existing issues?
diff --git a/app/Jobs/Util/Import.php b/app/Jobs/Util/Import.php
index 8a12e02e11..9ee89e3457 100644
--- a/app/Jobs/Util/Import.php
+++ b/app/Jobs/Util/Import.php
@@ -1097,6 +1097,9 @@ class Import implements ShouldQueue
             $modified['user_id'] = $this->processUserId($resource);
             $modified['company_id'] = $this->company->id;
             $modified['line_items'] = $this->cleanItems($modified['line_items']);
+            
+            //31/08-2023 set correct paid to date here:
+            $modified['paid_to_date'] = $modified['amount'] - $modified['balance'] ?? 0;
 
             unset($modified['id']);
                 
diff --git a/app/Models/Backup.php b/app/Models/Backup.php
index c0fd324fdf..78ba6b36fe 100644
--- a/app/Models/Backup.php
+++ b/app/Models/Backup.php
@@ -54,13 +54,13 @@ class Backup extends BaseModel
         return $this->belongsTo(Activity::class);
     }
 
-    public function storeRemotely(?string $html, Client $client)
+    public function storeRemotely(?string $html, Client | Vendor $client_or_vendor)
     {
         if (! $html || strlen($html) == 0) {
             return;
         }
 
-        $path = $client->backup_path().'/';
+        $path = $client_or_vendor->backup_path().'/';
         $filename = now()->format('Y_m_d').'_'.md5(time()).'.html';
         $file_path = $path.$filename;
 
diff --git a/app/Models/Vendor.php b/app/Models/Vendor.php
index 84dcd3f286..25ebbc4d9e 100644
--- a/app/Models/Vendor.php
+++ b/app/Models/Vendor.php
@@ -274,4 +274,9 @@ class Vendor extends BaseModel
     {
         return $this->company->date_format();
     }
+
+    public function backup_path() :string
+    {
+        return $this->company->company_key.'/'.$this->vendor_hash.'/backups';
+    }
 }
diff --git a/app/Repositories/ActivityRepository.php b/app/Repositories/ActivityRepository.php
index adafdfb2ca..3ea31c3c7b 100644
--- a/app/Repositories/ActivityRepository.php
+++ b/app/Repositories/ActivityRepository.php
@@ -11,21 +11,23 @@
 
 namespace App\Repositories;
 
-use App\Models\Activity;
+use App\Models\User;
+use App\Models\Quote;
 use App\Models\Backup;
-use App\Models\CompanyToken;
 use App\Models\Credit;
 use App\Models\Design;
 use App\Models\Invoice;
-use App\Models\Quote;
+use App\Models\Activity;
+use App\Utils\HtmlEngine;
+use App\Models\CompanyToken;
+use App\Models\PurchaseOrder;
+use App\Utils\Traits\MakesHash;
+use App\Utils\VendorHtmlEngine;
 use App\Models\RecurringInvoice;
-use App\Models\User;
+use App\Utils\Traits\MakesInvoiceHtml;
 use App\Services\PdfMaker\Design as PdfDesignModel;
 use App\Services\PdfMaker\Design as PdfMakerDesign;
 use App\Services\PdfMaker\PdfMaker as PdfMakerService;
-use App\Utils\HtmlEngine;
-use App\Utils\Traits\MakesHash;
-use App\Utils\Traits\MakesInvoiceHtml;
 
 /**
  * Class for activity repository.
@@ -85,13 +87,30 @@ class ActivityRepository extends BaseRepository
         ) {
             $backup = new Backup();
             $entity->load('client');
-            $contact = $entity->client->primary_contact()->first();
             $backup->amount = $entity->amount;
             $backup->activity_id = $activity->id;
             $backup->json_backup = '';
             $backup->save();
 
             $backup->storeRemotely($this->generateHtml($entity), $entity->client);
+
+            return;
+        }
+
+        if(get_class($entity) == PurchaseOrder::class)
+        {
+           
+            $backup = new Backup();
+            $entity->load('client');
+            $backup->amount = $entity->amount;
+            $backup->activity_id = $activity->id;
+            $backup->json_backup = '';
+            $backup->save();
+
+            $backup->storeRemotely($this->generateVendorHtml($entity), $entity->vendor);
+
+            return;
+
         }
     }
 
@@ -109,6 +128,58 @@ class ActivityRepository extends BaseRepository
         return false;
     }
 
+    private function generateVendorHtml($entity)
+    {
+        $entity_design_id = $entity->design_id ? $entity->design_id : $this->decodePrimaryKey($entity->vendor->getSetting('purchase_order_design_id'));
+        
+        $design = Design::withTrashed()->find($entity_design_id);
+
+        if (! $entity->invitations()->exists() || ! $design) {
+            nlog("No invitations for entity {$entity->id} - {$entity->number}");
+            return '';
+        }
+
+        $entity->load('vendor.company', 'invitations');
+
+        $html = new VendorHtmlEngine($entity->invitations->first()->load('purchase_order', 'contact'));
+
+        if ($design->is_custom) {
+            $options = [
+                'custom_partials' => json_decode(json_encode($design->design), true),
+            ];
+            $template = new PdfMakerDesign(PdfDesignModel::CUSTOM, $options);
+        } else {
+            $template = new PdfMakerDesign(strtolower($design->name));
+        }
+
+        $state = [
+            'template' => $template->elements([
+                'vendor' => $entity->vendor,
+                'entity' => $entity,
+                'pdf_variables' => (array) $entity->company->settings->pdf_variables,
+                '$product' => $design->design->product,
+            ]),
+            'variables' => $html->generateLabelsAndValues(),
+            'options' => [
+                'all_pages_header' => $entity->vendor->getSetting('all_pages_header'),
+                'all_pages_footer' => $entity->vendor->getSetting('all_pages_footer'),
+            ],
+            'process_markdown' => $entity->vendor->company->markdown_enabled,
+        ];
+
+        $maker = new PdfMakerService($state);
+
+        $html = $maker->design($template)
+                    ->build()
+                    ->getCompiledHTML(true);
+
+        $maker = null;
+        $state = null;
+                
+        return $html;
+
+    }
+
     private function generateHtml($entity)
     {
         $entity_design_id = '';
@@ -128,8 +199,6 @@ class ActivityRepository extends BaseRepository
             $entity_design_id = 'credit_design_id';
         }
 
-        // $entity->load('client.company');
-
         $entity_design_id = $entity->design_id ? $entity->design_id : $this->decodePrimaryKey($entity->client->getSetting($entity_design_id));
 
         $design = Design::withTrashed()->find($entity_design_id);
diff --git a/app/Transformers/PurchaseOrderHistoryTransformer.php b/app/Transformers/PurchaseOrderHistoryTransformer.php
new file mode 100644
index 0000000000..5f2af4d659
--- /dev/null
+++ b/app/Transformers/PurchaseOrderHistoryTransformer.php
@@ -0,0 +1,61 @@
+<?php
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2023. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://www.elastic.co/licensing/elastic-license
+ */
+
+namespace App\Transformers;
+
+use App\Models\Activity;
+use App\Models\Backup;
+use App\Utils\Traits\MakesHash;
+
+class PurchaseOrderHistoryTransformer extends EntityTransformer
+{
+    use MakesHash;
+
+    protected $defaultIncludes = [
+        // 'activity',
+    ];
+
+    protected $availableIncludes = [
+        'activity',
+    ];
+
+    public function transform(?Backup $backup)
+    {
+        if (! $backup) {
+            return [
+                'id' => '',
+                'activity_id' => '',
+                'json_backup' => (string) '',
+                'html_backup' => (string) '', //deprecated
+                'amount' => (float) 0,
+                'created_at' => (int) 0,
+                'updated_at' => (int) 0,
+            ];
+        }
+
+        return [
+            'id' => $this->encodePrimaryKey($backup->id),
+            'activity_id' => $this->encodePrimaryKey($backup->activity_id),
+            'json_backup' => (string) '',
+            'html_backup' => (string) '', //deprecated
+            'amount' => (float) $backup->amount,
+            'created_at' => (int) $backup->created_at,
+            'updated_at' => (int) $backup->updated_at,
+        ];
+    }
+
+    public function includeActivity(Backup $backup)
+    {
+        $transformer = new ActivityTransformer($this->serializer);
+
+        return $this->includeItem($backup->activity, $transformer, Activity::class);
+    }
+}
diff --git a/app/Transformers/PurchaseOrderTransformer.php b/app/Transformers/PurchaseOrderTransformer.php
index 527cca3466..532d16d24a 100644
--- a/app/Transformers/PurchaseOrderTransformer.php
+++ b/app/Transformers/PurchaseOrderTransformer.php
@@ -11,8 +11,10 @@
 
 namespace App\Transformers;
 
+use App\Models\Backup;
 use App\Models\Vendor;
 use App\Models\Expense;
+use App\Models\Activity;
 use App\Models\Document;
 use App\Models\PurchaseOrder;
 use App\Utils\Traits\MakesHash;
@@ -30,8 +32,16 @@ class PurchaseOrderTransformer extends EntityTransformer
     protected $availableIncludes = [
         'expense',
         'vendor',
+        'activities',
     ];
 
+    public function includeActivities(PurchaseOrder $purchase_order)
+    {
+        $transformer = new ActivityTransformer($this->serializer);
+
+        return $this->includeCollection($purchase_order->activities, $transformer, Activity::class);
+    }
+
     public function includeInvitations(PurchaseOrder $purchase_order)
     {
         $transformer = new PurchaseOrderInvitationTransformer($this->serializer);
@@ -39,6 +49,12 @@ class PurchaseOrderTransformer extends EntityTransformer
         return $this->includeCollection($purchase_order->invitations, $transformer, PurchaseOrderInvitation::class);
     }
 
+    public function includeHistory(PurchaseOrder $purchase_order)
+    {
+        $transformer = new PurchaseOrderHistoryTransformer($this->serializer);
+
+        return $this->includeCollection($purchase_order->history, $transformer, Backup::class);
+    }
 
     public function includeDocuments(PurchaseOrder $purchase_order)
     {
diff --git a/lang/en/texts.php b/lang/en/texts.php
index 183cbf5c8c..06502e3354 100644
--- a/lang/en/texts.php
+++ b/lang/en/texts.php
@@ -660,7 +660,7 @@ $LANG = array(
     'customize_help' => '<p>We use :pdfmake_link to define the invoice designs declaratively. The pdfmake :playground_link provides a great way to see the library in action.</p>
                         <p>If you need help figuring something out post a question to our :forum_link with the design you\'re using.</p>',
     'playground' => 'playground',
-    'support_forum' => 'support forum',
+    'support_forum' => 'Support Forums',
     'invoice_due_date' => 'Due Date',
     'quote_due_date' => 'Valid Until',
     'valid_until' => 'Valid Until',
diff --git a/tests/Feature/PurchaseOrderTest.php b/tests/Feature/PurchaseOrderTest.php
index b3fc1be635..15183ac0f2 100644
--- a/tests/Feature/PurchaseOrderTest.php
+++ b/tests/Feature/PurchaseOrderTest.php
@@ -11,14 +11,20 @@
 
 namespace Tests\Feature;
 
+use Tests\TestCase;
+use App\Utils\Ninja;
+use App\Models\Activity;
+use Tests\MockAccountData;
+use Illuminate\Support\Str;
 use App\Models\PurchaseOrder;
 use App\Utils\Traits\MakesHash;
 use Illuminate\Database\Eloquent\Model;
-use Illuminate\Foundation\Testing\DatabaseTransactions;
 use Illuminate\Support\Facades\Session;
-use Illuminate\Support\Str;
-use Tests\MockAccountData;
-use Tests\TestCase;
+use App\Repositories\ActivityRepository;
+use App\Events\PurchaseOrder\PurchaseOrderWasCreated;
+use App\Events\PurchaseOrder\PurchaseOrderWasUpdated;
+use App\Events\PurchaseOrder\PurchaseOrderWasAccepted;
+use Illuminate\Foundation\Testing\DatabaseTransactions;
 
 class PurchaseOrderTest extends TestCase
 {
@@ -26,6 +32,8 @@ class PurchaseOrderTest extends TestCase
     use DatabaseTransactions;
     use MockAccountData;
 
+    public $faker;
+
     protected function setUp(): void
     {
         parent::setUp();
@@ -39,6 +47,37 @@ class PurchaseOrderTest extends TestCase
         $this->makeTestData();
     }
 
+    public function testPurchaseOrderHistory()
+    {
+        event(new PurchaseOrderWasUpdated($this->purchase_order, $this->company, Ninja::eventVars($this->company, $this->user)));
+        event(new PurchaseOrderWasCreated($this->purchase_order, $this->company, Ninja::eventVars($this->company, $this->user)));
+
+        $ar = new ActivityRepository();
+        $fields = new \stdClass;
+        $fields->user_id = $this->purchase_order->user_id;
+        $fields->vendor_id = $this->purchase_order->vendor_id;
+        $fields->company_id = $this->purchase_order->company_id;
+        $fields->activity_type_id = Activity::UPDATE_PURCHASE_ORDER;
+        $fields->purchase_order_id = $this->purchase_order->id;
+
+        $ar->save($fields, $this->purchase_order, Ninja::eventVars($this->company, $this->user));
+
+        $response = $this->withHeaders([
+            'X-API-SECRET' => config('ninja.api_secret'),
+            'X-API-TOKEN' => $this->token,
+        ])->get("/api/v1/purchase_orders/{$this->purchase_order->hashed_id}?include=activities.history")
+        ->assertStatus(200);
+
+        $arr = $response->json();
+
+        $activities = $arr['data']['activities'];
+
+        foreach($activities as $activity) {
+            $this->assertTrue(count($activity['history']) >= 1);
+        }
+
+    }
+
     public function testPurchaseOrderBulkActions()
     {
         $i = $this->purchase_order->invitations->first();
@@ -194,7 +233,7 @@ class PurchaseOrderTest extends TestCase
 
         $x = $purchase_order->service()->markSent()->getPurchaseOrderPdf();
 
-        nlog($x);
+        // nlog($x);
     }
 
     public function testPurchaseOrderRest()
diff --git a/tests/MockAccountData.php b/tests/MockAccountData.php
index 218520c45f..ee34248dc1 100644
--- a/tests/MockAccountData.php
+++ b/tests/MockAccountData.php
@@ -184,6 +184,11 @@ trait MockAccountData
      */
     public $scheduler;
 
+    /**
+     * @var
+     */
+    public $purchase_order;
+
     public $contact;
     
     public $product;
diff --git a/tests/Unit/RecurringDateTest.php b/tests/Unit/RecurringDateTest.php
index 4321031b29..36c49e32b3 100644
--- a/tests/Unit/RecurringDateTest.php
+++ b/tests/Unit/RecurringDateTest.php
@@ -41,4 +41,19 @@ class RecurringDateTest extends TestCase
 
         $this->assertequals($trial_ends->format('Y-m-d'), '2021-12-03');
     }
+
+    public function testDateOverflowsForEndOfMonth()
+    {
+        $today = Carbon::parse('2022-01-31');
+
+        $next_month = $today->addMonthNoOverflow();
+
+        $this->assertEquals('2022-02-28', $next_month->format('Y-m-d'));
+
+        // $next_month = $today->addMonthNoOverflow();
+
+        // $this->assertEquals('2022-03-31', $next_month->format('Y-m-d'));
+
+    }
+
 }