Dreamweaver template designations changed?

I am using Dreamweaver MX 2004 and built a site using templates. Whenever I created a new page, the template location was created by Dreamweaver using a relative path as such:

<!-- InstanceBegin template="../../Templates/01_top.dwt.asp"-->

All seemed to be ok during development, but lately when I try to "open attached template", dreamweaver tells me there is an error in the path.

So I tried creating a new page based on the template and now I see dreamweaver define the template location as a virtual path such as:

<!-- InstanceBegin template="/Templates/01_top.dwt.asp"-->

What happened to cause this?

I didn't change my directories, my site definition, my anything. This may be related to another problem I am having where Dreamweaver no longer knows which pages belong to my template. (i.e. I update the template non-editable area and DW only updates a couple pages. In fact it only lists a couple pages as being candidate for update!)

Anyway, I left another question for the issue of not updating all the pages, but would like to know what's going on with the location specification described above. Perhaps it will clue me in on how to fix the other issue as well. (i.e. perhaps DW needs to re-index all the pages belonging to the template.... is there a way to do this?)

Thanks for any help!

Mark