Long time back one of our team started using item selector and it is still in place in tridion 2011 sp1 version. Now we are planning to upgrade to Tridion 2013 SP1 keeping the current DTAP environment in parallel. Since item selector has been extensively used across some 1000 compoents having link to a Page where it is being used. It is posing a problem for porting such content as item selector returns back the tcm-id of page into the text field of component and this would be invalid in the new environment.
We are planning for a app which would give us the list of components and the respective linked page webdav path in XML, which we can use in destination for linking to the page using core services. Is there any better or faster solution other than this? As developing this might consume sometime.