To retain your play counts and stats for rereleases, the following must happen when you submit music:
All visible metadata must be a 1:1 match across both releases. This includes track titles, album titles, ISRCs, label fields, etc.).
The audio must be the same.
The track must be delivered to Spotify with 5 days lead time to allow their systems to recognize the duplicative content, and map over the play counts.
Please note that this can be a tricky process and can’t be guaranteed across all streaming services.
Additionally, you'll want to first wait until your release is live through UnitedMasters before requesting takedowns from your previous distributor.