Cross-reference mixup after package

Hi,

I've got a question regarding InDesign cross-reference.

Here's the background:

1. The original source is stored in F drive.
2. Packaged source is stored in C drive.
3. For each of my drafts, I need to attach the packaged source with the PDF.
4. I have 10 cross references in a 100 page document.

The question is this:

When I package the InDesign files, I assumed that my cross references will be updated to the InDesign files in the packaging directory.

But when I checked them out, the cross references were still linked to the original source. So I had to manually update each cross reference to the packaging directory.

Although the PDF works fine, I have some concerns about this situation.

Does any one else had this problem? If so, are there any solutions to this issue?

Any help is greatly appreciated.

Thx.