Adobe Acrobat 9 Pro Extended - Cannot Migrate to New Computer

I have Adobe Acrobat 9 Pro Extended and trying to migrate the program to a new computer. Extracted the serial number via Belarc Advisor. The adobe Acrobat download center does NOT have the EXTENDED version as a selection. Downloaded the 9 Pro version and the install says that my serial number is invalid. Suspect this is becasue it's not exactly the same program. Adobe support was no help.... Help!