I made a rotoscope in Mocha AE, saved it and closed it.
Then in After Effects CC 2019 I clicked Create AE Masks and the masks appeared.
However, they were in the wrong part of the timeline so I clicked undo.
I unwittingly clicked undo twice and when I went back to Mocha, all the rotoscoping is gone!
Is the data saved somewhere because I cannot find it??
Thank you for letting us know. This might be something we can make more useful in the future. I will bring this to ( @martinb ) Martin’s attention, for subsequent versions.
This sounds like After Effects deleted the effect and as a result removed the data.
We have something upcoming in Mocha Pro that may alleviate this, so it will probably eventually migrate over to the Mocha AE version.