Ability to lock pricing for certain future dates

Please allow us to lock pricing for certain dates in the future so that if I go and do a bulk change for pricing for that month, those specific dates do not change. 

An example: there are regular concerts in our area ad we always put prices up for those nights due to demand, This us done 12 months in advance. During the year, I often have a need to put prices up or down for that month where the concert is held, but I would just like to be able to bulk change pricing without constantly worrying that I am putting the concert nights down by mistake too. It creates a lot of manual work for me having to keep an eye on all these special dates in the calendar when amending pricing.