Today when you create a translation and something happens to the created package so is the work a loss.
You cant go in to the base line that the system creates and take out the package again with the files that are in the base line.
You need to delete the files or put the to obsolete, after that delete the base line before you do the work again.
The system have already all information it needs and all the files it needs, the only thing you should have to do is to tell the system to recreate the zip package with the files in the base line.
Shouldn't matter for the system if you take it out 1 times or 20 times, it is the same files that you take out again and again.
When you shot in the translations then you can't take out the files again because they don't need to be sent to translation again because they are already translated and the work for the base line is done...