[GNC] Any way to clean up (not totally delete) saved auto-complete saved register entries?

[Steve Miller]

Running Windows 11, GnuCash 5.10.

My checking account registers have so many saved auto-complete options that
I'll never use again in my lifetime, anyway to edit that last so one can do
some kind of clean-up, so I'm not looking at an excessive drop down that I
have to scroll each time?

And separately, and I know this has come up again and again (and again), I
just find the format of this email list so difficult to read and search.
I've asked Santa year after year, guess I've been bad...