The
roof rafters are 16" on center the ceiling panels are 4' wide.
The plastic strips are forced between each panel.
The first panel where the front ceiling cabinets are is held up to ceiling studs with screws through panel.
Most of conversions we have seen by members have been changed with out causing a problem with ceiling.
In
Quick Tips & Mods there are 5 or 6 conversions that may help with your problem.
A piece of finished wood panel may hide the indentation where your cabinet was located.
Replacing ceiling panel may cause a bigger problem for you.
If you can find a glue that would hold a new piece of vinyl to present one on panel maybe the easiest fix if the wood panel does not work for you.
You could trim vinyl of existing vinyl near panel edge so new piece can be held by T strip.