Added before/after callbacks around import to stabilize persisting of VM UUID.

lib/vagrant/actions/import.rb

@@ -2,8 +2,12 @@ module Vagrant
   module Actions
     class Import < Base
       def execute!
+        @vm.invoke_callback(:before_import)
+
         logger.info "Importing base VM (#{Vagrant.config[:vm][:base]})..."
         @vm.vm = VirtualBox::VM.import(File.expand_path(Vagrant.config[:vm][:base]))
+
+        @vm.invoke_callback(:after_import)
       end
     end
   end

lib/vagrant/actions/up.rb

@@ -16,7 +16,7 @@ module Vagrant
         ["vagrant-root", Env.root_path, Vagrant.config.vm.project_directory]
       end
 
-      def before_boot
+      def after_import
         persist
         setup_mac_address
       end

test/test_helper.rb

@@ -60,6 +60,7 @@ class Test::Unit::TestCase
     @mock_vm = mock("vm")
     @mock_vm.stubs(:vm).returns(@vm)
     @mock_vm.stubs(:vm=)
+    @mock_vm.stubs(:invoke_callback)
     @action = action_klass.new(@mock_vm)
 
     [@mock_vm, @vm, @action]

test/vagrant/actions/import_test.rb

@@ -7,6 +7,14 @@ class ImportActionTest < Test::Unit::TestCase
     VirtualBox::VM.stubs(:import)
   end
 
+  should "invoke before/after callbacks around the import" do
+    callback_seq = sequence("callback_seq")
+    @mock_vm.expects(:invoke_callback).with(:before_import).once.in_sequence(callback_seq)
+    VirtualBox::VM.expects(:import).once.in_sequence(callback_seq)
+    @mock_vm.expects(:invoke_callback).with(:after_import).once.in_sequence(callback_seq)
+    @import.execute!
+  end
+
   should "call import on VirtualBox::VM with the proper base" do
     VirtualBox::VM.expects(:import).once
     @import.execute!

test/vagrant/actions/up_test.rb

@@ -7,11 +7,11 @@ class UpActionTest < Test::Unit::TestCase
   end
 
   context "callbacks" do
-    should "call persist and mac address setup before boot" do
+    should "call persist and mac address setup after import" do
       boot_seq = sequence("boot")
       @action.expects(:persist).once.in_sequence(boot_seq)
       @action.expects(:setup_mac_address).once.in_sequence(boot_seq)
-      @action.before_boot
+      @action.after_import
     end
 
     should "setup the root directory shared folder" do