Might work opening a completely new logbook with the first entry being:
"Previous loogbook(s)" ...
This is what I do with every new logbook I have to open.
I have an envelope glued to the inside of the cover in which I have:
- license
- medical
- copies of the last page or whatever is the page of the previous logbook
- copies of my endorsements which are not shown in a license (such as the complex and high-performance endorsements)
Just make sure you can always prove your previous experience.