The file names for the templates are like that way because they are directly from PIR.
Committed these templates to branches/3.8, trunk, and the build branch (branches/3.8.1-RC1)
Tested the issue using the build from source.pentaho.com of build date 03/Jun/2011.
The templates in the zip file are not added to the report designer. But when added manually the templates work fine.
The templates in the zip file match with the templates present in RD see screen shots
Marking this as resolved
Tested this issue using the PRD 3.8.1 RC1 build and this issue is resolved.