Whole Rests Missing after Slash Region Removed

I realize there have been many similar threads to this one, but I am struggling with whole rests in empty measure disappearing and being seemingly unrecoverable after I applied then removed a slash region.

I have not been able to find an answer, and of course I have a deadline about to slam me in the face, so I appreciate the assistance even if it is duplicated from an earlier thread I missed.

Maybe this is helpful?..

Yes, thank you!

(Next I’ll tackle the issue of a slash region that kicks in on beat 3, with “show other voices” engaged so that an attached playing technique appears… :flushed:)