Plan Year Periods selected for New plan incorrectly

Summary:

Four New plans were created for our Open enrollment year (7/1/24 - 6/30/25) with a calendar year period. All other plans were previously created with a fiscal year configuration, by mistake we created these four plans with a year period configuration of calendar year. Now we are finding that some of the rates are not calculating correctly because of the difference in the plan years.

The current calendar year ends 12/31/24, we need this to be extended to 6/30/25 coverage. How can this be accomplished without any negative results?

What is the best way to correct this issue? Any guidance will be greatly appreciated.