How can I change the WBS phase number for my WBS by phase?

Hello,

I am trying to figure out how to change the WBS phase number for specific tasks in my project. For some reason a group of about 15 tasks is assigned to phase 1 in my WBS, but they should be phase 10. The WBS number is showing 10.1, 10.2, 10.3, 10.4 and so on, but the phases for these are locked in. How can I assign them to a different phase?

Answers