🇺🇸United States @wereallmonks

I ran into a similar issue where my form display groups stopped appearing when I migrated. I used 'details' heavily and through testing, I discovered that 'tabs' now uses that functionality instead of details. Also, check your Form Modes. At Structure > Display Modes > Form Modes I had to set a new form mode for 'Content'. Cleared Cache and then my D9 form display now is identical to my D10 site.

@dmudie Did you ever find a workaround for this? I'm in the same boat - performed a migration and trying to setup a View to see if all my captions came over.