ah.... the way time-aware works isn't helping indeed. And if you even say so...
Then I have to stop using it also.
I am trying to
synchronize it back to 1 branch.
That is seems
IMPOSSIBLE for EA itself!

Very strange! I cant figure it out (still hoping I miss something here)
I have tried to import and merge the package with xmi. But EA tells me they cannot be merged. When choosing the option 'one transision' or something like that, it dóes import... but just makes new packages with same name, next to the existing ones.... so no merging.

Adding a new root-node and importing the sources from files even does not help! So when using this time-aware on a package, the whole project becomes time-aware, and I dont know how to disable that.
So made a new root-node and put the existing packages in this new one. Deleting the time-aware root-node.... Still not helping...

So for anyone who reads this:
be carefull when you clone a package to a new version !!
You cannot undo it!
And you might end up with a very fragmented project
Still hoping that EA will do something about this, for it can be a very good feature!!
Luckily we have a few versions yet, so we can merge things manually. I am happy that I stumbled upon this missing feature early on.