Vertical dotted line in midi editor

[ozzlvlosis]

I've been having trouble in the midi editor lately.
If I duplicate something, the notes in the first box of the duplicated section disappear and there is always a bold dotted line there instead of the normal thin one
This is AFTER quantizing (in grid mode) by the way. It's very time consuming having to click in every single note that's not properly duplicating.

Thank you for reading
Any suggestions?

[guitarman6]

Was there ever a resolution to this problem? See attached screenshot. Can't seem to edit anything to quantize on measure 19 in this editor. When I try to draw a note it disappears and you can see theres a solid line at that mm vs. dotted lines on outside left/right of two different regions.