I decided I wanted to add a new category instead of using a tag for that information on my site. I used the Tag to Category conversion option built into WordPress and now have that category. However, the default category is still associated with those posts (roughly 500 posts).
Is there a way that I can bulk remove the default category from all of these posts without removing the new category I just created? I only want one category per post, so removing the default category is needed. I can do it by Quick Edit on each post, but that's going to take a long time.