The closest question I could find to my sitionation is here, however the answers do not solve my issue Customize forms option (PowerApps) not showing up in SharePoint Online List
I am working with Sharepoint online, Win 10, MS Edge. I have a list named "Sales Contacts", the list columns were created from core site columns group "Core Contact and Calendar Columns".
I tried the save as list template suggestion and you can see that in both the original and test list the same result.
Any additional suggestions would be greatly appreciated. Thanks in advance.