Short lived branches are not changing to pull request

We upgraded SonarQube LTS version 8.9.6 from version LTS 7.9.1
We were not using pull request in SQ 7.9.1, we were following long lived and short lived concept.

We observed post upgrade short lived branches did not get changed to pull request.
Is there any API available using that we could convert short lived branches to pull request.

Hi,

Short-lived branches and long-lived branches both became just branches. There’s no API (but re-analysis!) to convert branches into PRs.

 
HTH,
Ann