Make date properties usable with a"has ever been" logic in custom and regular reports.
We need to be able to look into the historical values of some date properties in order to report last touch conversion information, instead of just the create date, or a overwritten date property. If this resource is implemented, we could analyze all conversions a contact has ever done just by setting a date stamp in a property whenever a conversion happens, which would make it very convenient to analyze inbound marketing efforts inside Hubspot. We need to be able to look beyond just the create date of new contacts when we are working with inbound marketing.
