Learning Mastery Gradebook - New Grading Period

[JonSheehan]

We are using the Learning Mastery Gradebook for about half of our classes and the traditional gradebook for the others. We just began our winter term today and the courses using the traditional gradebook have rolled over to the winter grading period. However, the courses using the LMG  are still seeing the outcome results from all of their fall assessments. I would like to start the winter with a clean slate for all of the standards based courses as well. Is this possible? I assumed that that when creating the grading periods that that traditional and LMG courses would behave the same.