title: Azure Dev-Ops - Change billing subscription
body: <p>We have our azure services built like this :</p>
  <h2>Company 1</h2>
  <ol>
  <li>Tenant 1</li>
  <li>Subscription 1</li>
  <li>Azure dev-opps 1 ( Projects, Builds, Release's, Source Control History )</li>
  <li>Azure active directory 1 ( user@company1.com (same username as bellow) )</li>
  </ol>
  <h2>Company 2</h2>
  <ol>
  <li>Tenant 2</li>
  <li>Subscription 2</li>
  <li>Azure services 2 ( Virtual Machines, VPN's, Database's, Apps, etc )</li>
  <li>Office 365 2</li>
  <li>Azure active directory 2 ( user@company2.com (same username as above) )</li>
  </ol>
  <p>So, we want to delete Tenant 1 and migrate Azure dev-opps 1 to the tenant 2 and subscription 2, without losing the things we have there. ( Projects, Builds, Release's, Source Control History )</p>
  <p>It is possible to change it like this and how can I do it? I'm admin in both.</p>