Change Owners equity translation rule?

So what would happen if we wanted to change Owners equity translation rule form YTD to PTD

If I understood the differences, then even with a historical dollar amount override, using the PTD option would take the prior override plus current period activity and translate to that number, effectively adjusting the dollar amount override.

We are incurring large amounts of time with various liquidations, mergers, acquisitions with the YTD method.  We would like the system to automatically adjust for new activity.

For example:

end of month equity in USD is $1M (may or may not be an override $ but probably is)