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+# TODO: Variant Collection Spreadsheet Editor Issues
+
+## Status: ⚠️ CRITICAL - NOT PRODUCTION READY
+
+### Issues Identified (November 14, 2025)
+
+#### 1. Column Names Not Displaying
+- **Symptom**: Spreadsheet element is not showing column names/headers
+- **Impact**: Users cannot see what properties they're editing
+- **Severity**: HIGH - Makes editor unusable
+
+#### 2. Data Not Persisting to Database
+- **Symptom**: Neither column headers nor cell values are saving to the database
+- **Impact**: Complete data loss - all entered data is lost on save
+- **Severity**: CRITICAL - Feature is completely broken
+
+### Previous Fixes Applied (Not Working)
+1. ✅ Removed overly aggressive column skip logic (commit `0dbc49e`)
+   - Changed from skipping "Property X" columns to only skipping truly empty names
+   - **Result**: Did not resolve the issue
+
+2. ✅ Fixed column rename persistence with immutable array updates
+   - **Result**: Visual updates work, but data still not persisting
+
+3. ✅ Added comprehensive console logging for debugging
+   - **Status**: Needs browser console inspection to see what's happening
+
+### Files Involved
+- `/LittleShop/wwwroot/js/variant-editor.js` - Main spreadsheet editor
+- `/LittleShop/Areas/Admin/Views/VariantCollections/Create.cshtml` - Create view
+- `/LittleShop/Areas/Admin/Views/VariantCollections/Edit.cshtml` - Edit view
+- `/LittleShop/Areas/Admin/Controllers/VariantCollectionsController.cs` - Backend controller
+- `/LittleShop/Services/VariantCollectionService.cs` - Service layer
+- `/LittleShop/DTOs/VariantCollectionDto.cs` - Data transfer objects
+
+### Next Steps for Debugging
+1. **Open browser console** (F12) when testing the editor
+2. **Check for JavaScript errors** that might be preventing initialization
+3. **Verify form submission** - Check Network tab for POST request
+4. **Inspect request payload** - Verify PropertiesJson field is populated
+5. **Test server-side** - Add logging to controller Create/Edit methods
+6. **Check Handsontable initialization** - Verify library is loading correctly
+
+### Test URL
+- **Create**: http://localhost:5000/Admin/VariantCollections/Create
+- **Login**: admin / admin
+
+### Potential Root Causes to Investigate
+1. **JavaScript not loading** - Check for 404 errors on variant-editor.js
+2. **Handsontable library issue** - Verify handsontable.full.min.js is loading
+3. **Form binding issue** - Hidden input might not be in the right place
+4. **Serialization timing** - serializeToJSON() might not be called before submit
+5. **View rendering issue** - Razor view might have compilation errors
+6. **Cache issues** - Browser might be loading old JavaScript despite cache-busting
+
+### Workaround
+Until this is fixed, variant collections can be created using the JSON textarea fallback:
+```json
+[
+  {
+    "name": "Size",
+    "values": ["Small", "Medium", "Large"]
+  },
+  {
+    "name": "Color",
+    "values": ["Red", "Blue", "Green"]
+  }
+]
+```
+
+### Priority
+**DEFERRED** - Proceeding with other development work. Will revisit when time permits.
+
+---
+
+**Created**: November 14, 2025
+**Last Updated**: November 14, 2025
+**Assigned To**: TBD
+**Estimated Effort**: 2-4 hours for proper debugging and fix