How keep reference link intact

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Product:
Cognos BI 10.2.1
Windows 2008 R2 server

Problem:
How to move reports and keep reference link intact?

Solution:
Drill through reports are linked with path and report ID, which gives this effect when you adjust the report.

Rename
When renamed a report, all involved links will be changed accordingly.

Copy and paste to new folder
All involved links will be changed accordingly.

Cut and paste both source and target report to new folder
All involved links will be changed accordingly.

Cut and paste target report to new folder
All involved links will be changed accordingly.

Move target report to new folder (found under More actions)
All involved links will be changed accordingly.

Open it and save as same name
All involved links will be broken, including drill through, portal page and Job

Open report A
Copy report to clipboard,
Change XML,
Open report from clipboard
Save as report A

Copy to another folder, then change it, then copy back
All involved links won’t be impacted

Copy report A to My folder
Open report A from My Folder
Change report A from My Folder , add color to a column.
Copy report A from My folder to original folder and overwrite old report

Copy to another folder, then copy report to XML, change XML and then save it as same name, then copy back
All involved links won’t be impacted

Copy report A to My folder
Open report A from My Folder
Copy report to clipboard from My Folder
Change XML,
Open report from clipboard
Save as report A in My folder and overwrite report A
Copy report A from My folder to original folder and overwrite old report

Copy to another folder, then save any other report as same name, then copy back
All involved links won’t be impacted

Copy report A to My folder
Save any other report as report A in My folder and overwrite report A
Copy report A from My folder to original folder and overwrite old report

Merge two drill through target reports to one
Given Source report A -> Target report A, Source report B -> Target report B,
request to change Source report B ->Target report A

Steps:
Delete Target report A
rename Target report B to Target A

More Information:
http://www-01.ibm.com/support/docview.wss?uid=swg21341623
http://cognosknowhow.blogspot.se/2013/01/how-to-avoid-breaking-report-link-for.html