I'm in the process of moving a Cartthrob powered EE1.x/Cartthrob 1.x store to EE2.x and Cartthrob 2.x. Most things have gone as smoothly as can be expected with such a big leap (ie not that smoothly, but I'm getting there!)
One issue I'm struggling with is migrating my product options now that they're handled differently. Cartthrob's new (stored option) solution is really good, but I don't know how to bulk-apply my old per-item price modifiers to the new method, as it looks like every item with a stored option saves it as some kind of unique (encrypted?) string. So I don't think it's a case of me writing a sql query to look for serialized arrays in the corresponding field_id and replacing them with a new string.
Has anyone got any experience of this or can think of a handy solution that doesn't involve me manually opening and closing hundreds of entries? Because at teh moment I'm only working on a staging DB - when my update is ready, I'm going to have to migrate the production database and that's going to be tricky in itself... :/