I wanted to move my class jetbrains.Foo to the package "jetbrains.server.foo". Package jetbrains.server exists in the project, but not in my module, subpackage "foo" is new for the project. I selected package jetbrains.server and called "create new package" action. IDEA suggested to choose one of several source directories to create new package there, but there wasn't my original source directory. BTW, option "move to another folder" was disabled.
I wanted IDEA to create new package in the source directory of the class without asking where to create it.
If option "move to another source folder" is enabled I expected to choose between all available source directories, not only directories with parent package.