5
I have already solved my problem. I give you xoops and pedigree compatible versions:
Xoops 2.5.9
Pedigree module version 1.31Alpha 6 (seems stable now)
PHP 5.6.35
MYSQL 5.6.41-84.1
I moved the base with xoops 2.5.6 and the 1.31 Alpha 1 module.
I made the table itself in the database for additional fields in the pedigree. I also changed the names of some rows in the tables (parents, breeders and owners) in the module database in version 1.31 Alpha 1. They are different than in 1.31Alpha 6. Only then did I copy the data from the old database to the new database. There are also some small mistakes that I have not repaired because they do not bother me.
The new base of dogs in this arrangement, as above, is stable, adds dogs, photos and other data, inbred counts, etc.
Anna :)