Good day Constantine,
this was really risky tap. I'm worried, it won't be possible to restore data. Do not know if anyone here know method how to restore part of rows deleted in SQLite database, but I'm really worried it's not possible.
Once, track is saved in database, it exists only in this database. And when it's deleted and is not included in backup, it's not possible to restore it.
If you edited track on map, then whole bottom panel is related to track itself, whole side panel (left) has features related to single selected point on track. Is there a way to make it more obvious? I know, it's little bit late ... sorry