How can I switch from the Autobleem kernel to the Project Eris kernel without losing my data?

The easy way would be to use Autobleem to restore my backup (LBOOT + recovery file) to return to the original state and then install the Eris kernel via USB.

However, I have replaced my internal games, changed the sha1 checksum for the number of games, changed the dimmer config and changed some config files and systemd entries to reduce log files and swap files in /tmp (this gives me about 50-80MB more RAM).

Some things can be reproduced, some I have forgotten.

So my question is: is it possible to use Autobleem to create a backup of the PCS in its current state with all the changes and then mix it with the original backup? If I understand correctly, the backup consists of several parts

Only the part that contains the kernel should be overwritten in order to install the original kernel. The rest should remain as it is so that the Eris kernel can then be installed. Does anyone have any ideas about this?