Although this question probably is more directly aimed at Lernstick, the question does arise naturally in the context of Prüfungsstick. I followed the directions for creating a squashfs-filesystem as exam file. This worked fine for a previous exam.
A new exam will have very similar settings and therefore I would like to use the already prepared squashfs as a base. However, I do not see how to easily pull that squashfs into Lernstick and start working from there. How can that be done?