Track deleted after "altitute correction"

[matt]

Hello,
I just noticed that a  track in error get's deleted (8.0.7 GP)  in the following condition:

I go to Manage Tracks/Routes, select "Properties" of a track where i want to correct the altitude.
I select "Correct Altitude" with e.g. "Apply smoothing filter" or  "Use DEM files (if available) ...." and "Delete old" activated.
Message appears in green shortly "Altitude  updated..."

If i  then close the Property screen, by using androids "return" button, or the "x" button on the top right, the track is deleted.
Only by selecting then the top right "check mark" button, the track get's  not deleted.

UPDATE for clarity: In the above description, i meant that the track gets deleted completly. Not only the old original one, for which i wanted to correct the altitude.
Matt