Remove Actual of a Cost-Loaded Schedule Upto a Particular Duration with Physical % Complete in P6

Hello Everyone,

I'm working on a claim job and I have a cost-loaded schedule with 12,000 activities and the start date of Jan 30, 2018. The schedule has the data date of December 31, 2018, and I would like to remove the actuals from July 1, 2018, to December 31, 2018, only along with the cost and physical % complete (only for the activities that are progressed between July 1, 18 to December 31, 18). I can manually remove them from the status option but it will be very tedious and possibility of errors. Does anyone know the easy to remove the actuals with the above-given scenario?

Your help is appreciated.

Regards,

Nilesh Jain