I am using iPad 5 (2018) with the latest version of Cubasis.
It was working fine until now but yesterday I upgraded to iOS 12.2 and it might be related.
The project is simple:
two tracks of Guitar recording
two tracks of Vocal recording
What is particular: the vocal tracks are done in slices of 1…10 bars and I did several deletes and trimming.
Perhaps 100 of them.
The problem is exactly as described above: I notice while finishing the last slices of recording that some sounds are missing.
Looking at the waves I saw that some track slices were replaced with smaller than a bar slice with a flat recording (0 amplitude).
I rerecorded some and noticed that more start being replaced with the dummy flat slices which still carry the name.
At this moment I stopped not to lose everything.
I believe it is 25% of the recording gone, just from the vocal part that was done after the guitar one.
The trash is full but of small tracks.
They look to be the slices that I normally removed through trimming and correction.
Very hard to check it as each action seem to damage further the track.
I consider those recordings gone but I am very uneasy to further use the app without a serious fix.