OK, so I’ve been invited to the beta tester group and installed the 0.9-beta1-2.
After that, to be sure, I deleted my contact configuration on the phone, create a new one and recync. Yesterday, I still had only 140 contacft synced.
Today I remade the test to retrieve the log, and this time, it synced 376 (progress but it is still not it :().
Here is my log of that sync DAVdroid1.log
The thing is, on line 1813 we see that it found the correct amount of contact.