We're integrating our Roads and Highways deployment with an external system. The external system does not like it when the FROM_DATE=TO_DATE, whether it be on historic or current routes.
Sometimes, to preserve internal events, I find myself making a "temporary edit". Perhaps I'll reassign a roadway to a fake ROUTE_ID while I sort out the edit upstream or downstream, then reassign the road to the actual ROUTE_ID.
We use the date the edit was made as the FROM_DATE, by simply pulling up the date picker in the R&H dialog and selecting "Today". The system provides a default of "8/22/2019 00:00:00". Since subsequent edits on the same ROUTE_ID will all have the same FROM_DATE, these types of temporary edits are creating historic routes where the FROM_DATE=TO_DATE.