pisearch module: wrong hierarchy after uninstall

[nils73]

I would have liked to use pisearch module with 0.13 Canary very much - but after testing it, I found out, that it did not work with my navigation-structure since I need the search to be visible within sub-navigation and I could not get it working. So I uninstalled the module and to my surprise the whole hierarchy got mixed up!!! I tried to overwrite the settings via SQL but each and every time I modify some content (or even a template) the system messes up the hierarchy once again.

Instead of:

1. Home
2. About
2.1 History
3. Products

I now hav

. Home
1 About
1.1 History
2. Products

Does anyone know how to get the whole thing right again so that I can switch back to PiSearch-Plugin, which worked well for me?

Regards,
Nils