THANK YOU! I can now see the problem.
You have two sets of tables using the prefixes q31H4_ and q31h4_. Note that they are not the same. The are ALMOST the same, but the first one has a capital H and the second one has a lowercase h.
The tables with the q31H4_ prefix are from an old installation, presumably a Joomla 3 or older site which was upgraded at some point.
The tables with the q31h4_ prefix are the ones from your current Joomla 4.2.5 site.
Depending on the configuration of both your Linux server and your local server this CAN cause problems because of the way MySQL works with uppercase letters in table names. Please see https://www.akeeba.com/documentation/warnings/q106.html
The solution in your case is to exclude all tables with the UPPERCASE letter (q31H4_) prefix before backing up your site. You can do that in Akeeba Backup, RegEx Database Exclusion. Create a new row of the type Exclude a table and with the Filter Item set to
!/^#__/ This excludes all tables which do not have the prefix configured in your site. Take a new backup and restore it.
Please note that depending on how your Linux host is configured this may not work. If that's the case, you will need to delete all tables which have the the UPPERCASE letter (q31H4_) prefix from your site.
Also note that this problem only happens when restoring your site on a target server which stores the MySQL data in a case-sensitive filesystem. This is every Windows machine (all Windows filesystems are case-insensitive), most macOS machines (HFS+ and APFS are case-insensitive by default, both as they come out of the factory and when you format an HDD/SSD), and extremely rarely on Linux machines (e.g. when they are using a Samba share to a case-insensitive Windows machine, a disk formatted in NTFS or FAT32, etc). In short, you will practically only see this problem when restoring on Windows or macOS but not when restoring to a live site which runs on a Linux server.
Nicholas K. Dionysopoulos
Lead Developer and Director
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