Unified Development Environments (UDE) for Microsoft Dynamics 365 Finance and Operation (D365FO) may go to "Deallocate" state after performing an environment copy from Lifecycle Services portal.

As of this-idea submission, an UDE will be removed after 15 days of going to "Deallocate" status. It is suggested to extend the time the UDE for D365FO remains in "Deallocate" state, including concerned telemetry so there is enough time for Microsoft support team to provide assistance customer addressing their issue.