Changing Theta Sketch Dimension on On Going Production Druid

Hi,
We have got a need to change our existing theta sketch dimension from Dimension A to Dimension B. We have been using Druid in Production since more than a year.

We are worried about the events which are already ingested in Druid with Older Theta Sketch Dimension.

What are the migration impacts we are expected to encounter ?

Any help would be appreciated.

Thanks,

Pravesh Gupta