Import Caller Trace:
  Called from package My::Package::B
    (Exporting VERSION to My::Package::B)
  Called from package main
  Called from package main
  Called from package My::Package::A
    (Exporting VERSION to My::Package::A)
  Called from package main
  Called from package main
  Called from package main
  Called from package main
  Called from package main
My::Package::B loaded.
My::Package::A loaded.
$My::Package::A::VERSION = 3.14