Having the same periods - is it possible? one as a adjustment period and another as a normal period

Hi,

We have shifted our Financial year from APR- MAR to JUL-JUN. So what we have did is that for the existing calendar we have changed the remaining periods (JUL-MAR of 2020 year) to adjustment periods by enabling adjustment check box (all the Adjustment periods will always be in closed state). We created a new financial year as 2021 for which the start period is JUL and the last period is JUN.

Now there in both the Financial Years 2020 and 2021 are having the same set of Periods (With some period naming changes), Will this have cause any serious issues.Or will this impact my year on year Retained earnings calculation.