There is practically no situation where rescan will help, you shouldn't advise people to do that.
I had missing transactions from my wallet so my wallet balance was wrong after a day waiting for a transaction to show. After i did a rescan the missing transactions showed and the balance in my wallet corrected itself. So that was a situation where rescan helped me.
yes if you read my edited reply i did say i misread it, some minutes afterwards and that my fix would not help. my reply to gmaxwell was that there was a situation where it had after he had stated there is practically no situation where rescan will help. So thats all i was saying.
