Hi Guys!
I have a good news and bad news to share for all with regards to fixing the issue on "Migrating 2k20 Cyberfaces to 2k21"

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You can check this link out
https://www.2kspecialist.net/2020/09/ma ... s-and.html "Make 2K20 Cyberfaces, Jerseys and Accesories Compatible to NBA 2K21 By SimonnLee [FOR 2K21]".
There are 3 releases and the latest version is v1.2. I suggest to download first the previous versions before proceeding/downloading the latest version.
The fix is somehow relating to the jersey and accessories.
NOTE: BACKUP FIRST ALL YOUR MODS, BEFORE PASTING ANYTHING (Unless you can remember all the steps and undo all the files modified).
What I did was simple:
Copied the all files in the "clothing" folder (pasted it inside my Mod/clothing folder).
Copied the "pcreate" folder (pasted it in my Main Mod folder)
Copied all the jersey and short (.iff extension files) in my Main Mod folder
The bad news is that when you try to update your cyberfaces with 2k21 compatible cyberfaces, it will fall back with the same issue on the jerseys.
Therefore, this fix is applicable only for 2k20 cyberfaces migrating to 2k21 cyberfaces (based from my observation).
Credits to SimonnLee for this easy fix.
Hope it helps. Happy Gaming, Enjoy!