Act 5 100% Complete, but inaccessible lanes in 5.3

In 5.3 I have inaccessible lanes (with full refills in them) and no way to get keys. Are we supposed to be able to access them? I thought once we had the keys they were supposed to remain unlocked. Has this happened to anyone else?

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Comments
You can only go through them once.
Yeah 5.3 is very rich in refills.
will do, thanks. -- maybe they will hook me up with a level 1 heal for my trouble.