Don't know why that's happening on your particular computer,  but APCC maintains a backups folder with settings files here:

C:\ProgramData\Astro-Physics\APCC\Backups

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3:  https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Yves Laroche
> Sent: Thursday, June 4, 2020 6:25 PM
> To: main@ap-gto.groups.io
> Subject: Re : [ap-gto] APCC 1.8.3.1 old settings are missing
>
> Is there a way to transform the old settings file to a new compatible one ?
>
> Yves
>
>
> Le 04/06/20 21:12, Yves Laroche <yves.laroche@...> a écrit :
>
>  Hi Ray,
>
>  With the installation  of version APCC 1.8.3.1 all my settings are gone.  I renamed the file Settings.apdb to
> Settings.apcc and moved it to C:\ProgramData\Astro-Physics\APCC because it seemed that you moved that file but at
> each time I opened APCC the file Settings.apcc is replaced by a new one.
>
>  Regards,
>  Yves
>
>