We are attempting to revamp our account structures to take effect at the beginning of the year. The old structures will need to be available until April for potential entries for 2019, thus the new rules will need to peacefully coexist for part of 2020. We have expired the old structures and advanced rules as of 12/31/2019 and set the new rules to take effect starting 1/1/2020. When we attempt to add the new structure to the ledger of the legal entity, we get errors that the main accounts overlap with the old structures. If we attempt to do this within an account structure as shown below, we get a similar overlap error.
I note that on the configure account structures page on doc.microsoft.com, there is no mention of the Active dates. Can anyone confirm whether the date functionality is supposed to work?