Ouchi Sadatsuna

Hello all,

Ouchi Sadatsuna was a vassal of Date Masamune, but he deserted him in
1584. Masamune led a punitive campaign against him and captured his
castle, while Ouchi fled to the Hatakeyama. He then fought against the
Date at Hitotoribashi.

However, in 1589 he is seen again, but this time fighting for the Date
at Suriagehara.

Does anyone know when and why Masamune accepted Ouchi back into his
service?

Brian