Forcing RES Dates to align with ACTIVITY Dates

Imported an XER to create new project. No changes made to anything, but Calc'ing the project changed some Finish dates.  Noted the affected activityID's. Imported again and noticed activity Remain Duration is different from Resource RemDuration.  When I calc the schedule, the Activity RemainDur is replaced with Resource RemainDur, and dates change (obviously).  Checkbox for "Drive Activity Dates" is checked in Resource window.

Is there a way to FORCE the activity durations and dates -> down to the Resource, and keep them synchronized, no-matter-what?

Thanks,

Tom