why does YTD journals reverse in next period (incorrect FCCS_QTD)

Summary:

Can anyone provide a reasoning or a reference to a document on why the YTD journals gets reversed in the next period?

With current close period as Apr when a user tries to retrieve on Jun, FCCS_QTD the numbers doesn't look right

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):