Save as a new product button doesn't save value from custom field

[xhuang9]

Description

When "save as a new product" of an existing product, custom fields like "Plain Text", "Assets", "Categories", "Redactor" doesn't get popped over. It will be set to empty value or field default value.
But variant value set correctly. I checked "Craft::$app->getRequest();" from action "commerce/products/save-product". Seems "_ bodyParams" missing the custom field value from product.

Steps to reproduce

1. create a product, add field plain text, assets, categories, redactor in it
2. put some value in those fields and save it
3. reopen the previous product just saved
4. change the SKU to a unique value, and click "save as a new product" on top right

Additional info

• Craft version: 3.4.9
• PHP version: 7.3.1
• Database driver & version:
• Plugins & versions: 3.0.11

[lukeholder]

Looks like a bug with the new delta update feature implemented in Craft CMS 3.4 - Will look into a fix.

[billythekid]

I've noticed this doesn't happen on other Elements, such as entries. Save as new on those and they retain their values fine. Any word on progress on this @lukeholder? Cheers.