QSO records have disappearred from the log list

[F6IIA]

Hello,

I've been using Swisslog for a year and the latest version is 5.113 with W10.

I've never had any problems.

But today I note that some QSOs have disappeared from the main log list... 

Example: I contacted F5VV and I add this contact, no problem to add this record and the "all previous QSOs" appear correctly.

But all QSOs with F5VV have disappeared from the main log list. It's the same for some other calls contacted several times.

I tried restoring my last backup, without success. I tried sequencing, without success.


Where is my mistake? Any help would be welcome....


Chris