Topic: No access to GL entries

We have been using FA for 6 years now. Until recently we were working in FA 2.3.22 (LAMP on Linux Mint 17), taking daily backups and restoring to FA on another PC so we would always have a working backup. However, all of a sudden it was not possible to restore the latest backups any more. We first tried to upgrade to 2.3.24 on both machines, but backup and restore was still not working. The solutions we went for was to make a fresh install of FA 2.4.4 on a another PC (on Linux Mint 19), restore the latest working backup from FA 3.2.22 and reenter the entries done during the days after the latest working backup. Not a very elegant solution, but it is now working and we are again able to backup and restore.
One thing that is not working is the ability to open and modify the entries done before the latest backup - we can open and modify only entries done after (i.e. the latest two weeks). We can still see the old entries when opening a specific GL account, and we can also see and eliminate the old entries. But we can't open and modify them.
Why is this? Some security feature? Or some incompatibility between 2.3.22 and 2.4.4?

Re: No access to GL entries

The default document numbering system may have changed to the new FA 2.4 defaults during the upgrade and the new company specific sys_prefs table record values and config.php values need to be re-jigged.

The actual problem you may have encountered in your old version install would have been a change in PHP version in the OS updates that may have caused the functionality breakage.

Re: No access to GL entries

Sounds as a reasonable explanation, as it actually is a higher versions of PHP. How do I "rejig"?

Re: No access to GL entries

If you are on a public hosting service, then ask them to provide for atleast a CGI means of running an older version of PHP. Most hosting plans now allow for this. If you are hosting it on a custom VPS / physical server you have access to and manage yourself, then you can do likewise as well by choosing an appropriate repo that has the older version for your OS.