Hi,
I am running tests for xf2 migration from xf1. All software versions are recent - both for XenForo and your extension. I ran the cli import and it got stuck on the last step, post import. Please see the screenshot:

Any idea which query this might be? Before Groups import I have migrated to utf8mb4 BUT I needed to change collation of 'xf_user'.'username' field to utf8mb4_polish_ci because I have some old users from vbulletin times using accented characters specific to polish language. That means that it is possible that some usernames cannot be inserted into utf8mb4_general_ci which are default for all XenForo tables (for example in xf_post table)... I need to create a test scenario for dealing with this issue, and I want to know what query could cause a NULL here - is this because of collation issues or some other scenario - like deleted users etc...
I am running tests for xf2 migration from xf1. All software versions are recent - both for XenForo and your extension. I ran the cli import and it got stuck on the last step, post import. Please see the screenshot:

Any idea which query this might be? Before Groups import I have migrated to utf8mb4 BUT I needed to change collation of 'xf_user'.'username' field to utf8mb4_polish_ci because I have some old users from vbulletin times using accented characters specific to polish language. That means that it is possible that some usernames cannot be inserted into utf8mb4_general_ci which are default for all XenForo tables (for example in xf_post table)... I need to create a test scenario for dealing with this issue, and I want to know what query could cause a NULL here - is this because of collation issues or some other scenario - like deleted users etc...