Position History/Status History Date

Their start date or App2hire effective date is their first day when you drill around on position history and status history but our App2Hire action is imported in from an Interface designed behind the scenes when we implemented our ATS System and often time is imported in before they start.

For example, they come into Lawson via our API effective 3/8/18 but really don't start until 3/26/18. We have a couple other entries we have to make after the initial "App2Hire" but it doesn't allow us to go back in and change the position/status history start dates once those entries are made without us having to reverse them out. They are called "PendHire" and "FinalHire".

Our goal was to get them into Lawson earlier to get administrative paperwork in order before they start and have everything they need.

Is there a way to change this or a screen we can use to change the dates? Any help would be greatly appreciated.