If you have a roster role with multiple assignees permitted
You assign John, Fred and Hilda on a certain date and save.
Then you edit the roster and remove (change to blank) John and Fred. Hilda remains, on the third line. Save.
When you re-load, Hilda shows up on her own. Change her to blank and save.
It doesn't work. Hilda remains assigned.
This is because after the first save, Hilda was given a rank of 3 in the roster_role_assignment table.
Through subsequent edits, that rank remains unchanged.
But when we try to delete her, it tries to delete her at rank 1.
A problem that was exposed (but not caused) by https://github.com/tbar0970/jethro-pmm/commit/0b596d5cc04ace648f485894cdde6a62840c4bc2
If you have a roster role with multiple assignees permitted You assign John, Fred and Hilda on a certain date and save. Then you edit the roster and remove (change to blank) John and Fred. Hilda remains, on the third line. Save. When you re-load, Hilda shows up on her own. Change her to blank and save. It doesn't work. Hilda remains assigned.
This is because after the first save, Hilda was given a rank of 3 in the roster_role_assignment table. Through subsequent edits, that rank remains unchanged. But when we try to delete her, it tries to delete her at rank 1.