Delete measure in score not reflected in parts; subsequent note entry causes corruption

Windows 7, GIT commit: 6dffde5

1) create score for one instrument with 8 measures
2) file / parts
3) new all
4) OK
5) enter a single quarter note into bar 8
6) select measure 2
7) ctrl+delete
8) view part

Result: multi-measure rest still shows 7 bars rest, should be 6 now

9) return to score
10) enter 8 quarter notes in bars 1-2
11) view part

Result: first two bars are corrupt

See also #12138: [Trunk] Score and part not in accordance after changing amount of bars and corrupt if notes are added. The originally reported issue with *inserting* measures is fixed, but *deleting* measures creates exactly the same sort of issues as described in that issue. Also, FWIW, looking at the commit that fixed the insert problem, I see that it prevents insertion or deletion of frames (boxes) from being linked. This change appears deliberate, but I can't think of a reason one would *not* want addition/deletion of frames to be linked.