Move-In Date overlaps?

I have a tenant moving out June 1st, and a new tenant moving in that same day (June 1st). Under Leases & Tenants when I go to edit the “Move Dates” for the new tenant it says:

Cannot set Move-In Date to overlap with another Tenancy.
Tenancy overlaps other tenancy within this unit.
Something went wrong. Please try again or contact our support.

How can this be corrected so it reflects the correct move-out/move-in date for each tenant?