Summary:

Hi Documentation team,
Regarding ADO integration with Jira Align, according to our Official documentation Azure DevOps integration data mapping , on the Features field mapping table Azure DevOps features become features in Jira Align I can't see Points, Estimation, or efforts in the Jira Align Field | Azure DevOps Field column.
Without this information, it seems that Estimation values don't sync at all between the applications, which is incorrect and causes confusion about the expected behavior.

Feature points indeed are synced from Jira Align to ADO and vice-versa :

Documentation suggestion

My suggestion is to add a row like this in the Azure DevOps features become features in Jira Align table, similar to the Story table