I am using the Line Tool to indicate a lip up in brass parts. I don't want to use the glissando tool. 

I use the Line Tool, draw my line from the note down through the staff i.e.  /   and save the file.

When I go back to those notes later on, some of the lines move or shrink up. Weird.

Any suggestions on a fix for this?

Windows 10.5

Finale 26.1