I've had that happen to my Regrowth save after those updated, it's nothing you can do. Every time you have a an item value shuffle, some micro blocks go to hell in a random chunk. Sad but trueNEW KNOWN ISSUES
For...some odd reason, any microblocks made of VANILLA materials (stone, wood), will switch to another block between 0.0.6 and 0.0.7, possibly. I've had a report of all stone microblocks turning into osmium, but they are next to mod blocks that haven't changed at all.