Staking only happens in a wallet that is unlocked for staking, unlocked for staking and spending, or never been encrypted and therefore can not be locked. That said, factors that do equate into staking do happen when a wallet is locked or offline such as coin age and of course, network stake weight. These factors will remain in effect when your wallet does again meet the requirements to continue staking and yes, your reward will catch up to still equal 7% annual so long as you do not fail to meet the requirements (wallet is locked or offline) for an extended time. By extended time, I mean 30 days or beyond. At a very minimal, leave your wallet running and meeting the staking requirements for 12 hours every month.

Sorry for the delayed response to your question Porsche911. You must have posted it just as I laid down for some much needed sleep. Thanks for the question. I hope I answered sufficiently.