I had the disappearing parts of tracks a long time ago but with RealBand. Have never consolidated a track since. as to the 2020 version opening files right click on the file and choose open with PT 2022 - seq files are still set to open with the old program. If its the same as RB PG leave the 2020 version on your PC because its 32 bit and some people like to use 32 bit plugins. 32 bit plugins don't work with 64 bit programs unless you use jbridge but it doesn't always work and some older plugins just get lost when you move to 64 bit.

Some RB users work in 64 bit then open their seq files in 32 bit, use the plugin they want and then save and open in the 64 bit version after the track has been changed by the 32 bit plugin and rendered to a wav file.