Liane, I don't think it's been posted before now, so thanks. Yes, they've been doing that, it's mostly been 48 hours, which most still are, and some 24 hours. Some don't have either.
I'm wondering what the differences are, why some are different from others. I've got two sites ranking consecutively for the same search term, each with an indented and a regular page. One isn't in ODP and has no refresh on it. The other is in ODP for about a month and the index page has the 48 hours. I imagine that could have something to do with it.