Tamas,
My bad! the TEXTS tab is marked visible, i have updated update my image here.
Top-of-head i could see 'qty' field being mandatory. If i use all mandatory fields to merge that should solve the cache issue ? or Is there a limit on number of tabs that can be merged ? or is it the issue of having 'common' cache' for Header and Item tabs ?
My steps :
a) Parked few fields from CONTACT to merge it with ACCOUNTS tab.
b) retained only fields of interest from ACCOUNTS tab, but cannot see the parked fields from CONTACT to add them here.
-Ram