preserve file creation and modification info?

I'm sorry to see it go, as well!  We appreciate your kind words about our wind-down process.  We put a lot of thought and effort into it to try to make it as painless as possible for our users.

As far as dates within Buzzword documents, I'm afraid that this is 'spec.'  What's happening is that we're creating new Word documents from the original Buzzword ones, so those new docs don't know anything about the last-saved date for the source Buzzword doc. What we're doing is a batch export-to-docx for all of your Buzzword docs.