Is it possible to merge two plans (in the same project) together?

[marcel_portmann]

Hi,

- Bamboo 6.10.3 build 61008 - 27 Sep 19
- Running on a Windows 10 server

I created a plan for integration and one with the same tasks for release-version.
Is there a way to merge both to one plan?

Thank you for helping.

Kind regards,
Marcel