If the relationships have been successfully & correctly migrated to the new table/s, can wp_toolset_associations_old be deleted or is it still used in any circumstances??
Solution:
The database table "wp_toolset_associations_old" is a backup table.
You can remove it after all post type relationships have migrated successfully.
But I suggest you backup your website database first.
When I watch my websites in my Toolset account online, it gives me a notification that I need to update Toolset Types from 3.3.13 to version 3.4.2 for my website.
Solution:
Please try these:
Dashboard-> Plugins-> "Add new" and click on the "Commercial" tab.
In section "Toolset", click Check update button, and test again
