Imported rules "disappear" in Hazel 3.3 on Yosemite

I just upgraded my system to Yosemite (a fresh nuke-and-pave install, *not* an in-place upgrade from 10.9), and noticed that when I reimport some of the rules I previously exported from Hazel 3.3 on my pre-Yosemite Mavericks setup, that the rules disappear from the selected folder when I close the Hazel prefpane, and open it up again later.

What's puzzling is that this isn't happening with another set of rules I imported in the very same manner. It's only happening with a particular ruleset.

If it helps, here is the ruleset that is giving me these problems:

http://d.pr/f/10ybi/592LFV6j

These rules are applied to a folder called "_CAMERA UPLOADS" in my Dropbox folder.

Any ideas what's going on here?

Ok, so a couple things here. 3.3.2, which I released this morning, should fix the rules not being saved. That said, the source of the problem is one of your rules. You use a custom attribute called "MM", but no such attribute is defined anywhere. I'm not sure how the rule got corrupted like that. If you can replicate the steps to deleting the original token without the other tokens referring to it being deleted, let me know so I can close that loophole.