So I was manually taking out all my items (apparently because I'm an idiot and didn't realize there was an easier way to transfer at the bottom) and now my inventory has 200 items that I can't move to my new shop and can't put back in my old. Any help/suggestions? :/

edit: easiest solution so far has to been to create another new shop, looks like i'll let it hold the other items until max increase allowed again

You can't put anything back to your legacy shop. Create another shop/frag/delete/donate? @ Lindsey

Wait. Why can't you put them in your new shop?

there still aren't any limits on Vaults. Quickstock them to one of your shops, but choose Vault column instead.

I was having trouble finding the quick stock option...

quickstock was just disabled today. After they did that, the mass-transfer functions stopped working for a few hours. Mass-transfer has been re-enabled.

Now you will need to go to Edit Items, go to the very bottom of the page, and look at the dropdown just above the Process Removals button. Since mass-transfer now works, see if one of your newshops is in that dropdown. If not, go create one, or create another one and try again. Once you've got a target you like, choose that from the dropdown.

Enter how many of whatever items on that page and then hit Process Removals. Last week, it was taking three days for a successful transfer. I did three transfers today, and they took less than the twelve minutes necessary to pick another Nostalgic Mallarchy from the Mallarchy Pond.

I know how to do that, but I don't want to quick stock 200 junk items into my vault, since I actually use it as a vault to store a lot of valuable objects :/

I can't quick stock back in to my old shop because they're not letting you add more items to them. I can't add them to my new shop because I've already reached my max items allowed in it.

awesome, thanks for the answer/help! :)