Sync blank product sizes to its associated RPC product(s)

Currently, sizes cannot be edited on an RPC product post creation. Users were required to recreate a pre-decorated (RPC) product to just add or remove a size all together.

We enhanced the RPC product's settings to add the ability to manage the blank and sync sizes from that blank.

When you click on 'Manage Blank Product' from RPC product settings, it will take you directly to the original blank product in a new tab-- You can edit and save your size updates there. Heading back to the RPC product tab, you can 'Sync Sizes from Blank' to save the edits you just made.