Anyone ever had issues with trying to add a custom field to an existing subtab. Make the field, Set the Display = The Subtab, Display Type Normal, Have it shown on the record. Assigned to the Entry form. When i go to modify the entry form, the field is not in the Subtab its set to but rather in a "Custom" subtab

are they 3 different subtabs named the same or it's just displayed 3 times?

I see this happen ad hoc. Sometimes you can remove it from the record and then re-add it, save, and apply to forms, and it will force an update , failing this i usually just use move elements between subtabs (this is very rare exception as usually the step i just mentioned works.)

Interesting theyre drill down subtabs. Its Purchasing/Inventory:Vendor. Ended up just moving the element into Main for now lol...

I have this happen a lot. I too use the move elements between subtabs…..just simpler