Test Projects Synch problem

[fyang]

I created a new Test Project that based on existing test project. I found that not all test cases were imported into my new test project.
For example, the existing test project has test specifications tree structure:
Folder1
-1tc1
-2tc2
-3tc3
Folder2
-8tc8
-9tc9
Folder3
-4tc4
-5tc5
The number in front of each test case is automatically generated. The Folder3 was generated before the Folder2, which is why the case numbers in Folder2 are bigger than Folder3's. After I created a new test project based on above existing test project, I found that only cases in Folder1 and Folder2 are imported into my new test project. The cases along with Folder3 were missing in the new test project.

Also, I'd like to know if there is a functionality to synchronize the two projects. For example, I have an original Test Project called "testcasespool". 250 cases in the "testcasesspool" were created completely. Then I have a new Test Project A wants to import all test cases in the "testcasespool". After a while, I have 10 new test cases need to be written into the "testcasepool", as I want to keep this project like a base. Now my Test Project A wants to benefit the newly added 10 cases. Instead of creating a new Test Project, can I synchronize the Test Project A with the "testcasepool" so that any new changes in the "testcasespool" are reflected in the Test Project A?
Thanks