I don't understund the change in this PR.
#7139

var entity = entityAsObj.As<IModificationAudited>();
if (entity.LastModifierUserId != null)
{
    // LastModifierUserId is already set
    return;
}

If I interpret this correctly, “LastModifierUserId” never changes again after the first change, as the value is set from the first change onwards.

Could it be that this change is incorrect?