It'll depend on the ending voltage. If it winds up too low at the end of the run it will still be too low when pulled back from storage. It will not drop an appreciable amount from long storage regardless of the resting voltage. If the run was ended at a perfect storage voltage then it will remain that way for a very long time.

When the run is over, the voltage will quickly spring back up to it's true resting voltage , then very very slowly seld discharge. The self-discharge rate is so low that it is insignificant for time periods of less than a month. Even a year is not very significant when talking about healthy lipo seof-discharge rates.