No, never seen that. But then I’ve never let web hosts do that sort of job.
At a guess, I’d say they either ticked some boxes they should have when the data was exported from the old server, or similar in setting up the new one. Incorrect delimiters are a possibility.
Or perhaps they need to compare setup of each server, to make sure the new one matches the old one.
I can’t even offer any help with this one, as it requires total access to both your old and new servers. The only thing I am qualified to confirm is that it is not in any way related to kiwitrees’ software itself.