If you still have UFT on the old computer, I would suggest that you start over from scratch.
First backup each project that you have on the old computer without the library etc. Then back up the library files separately.
Restore the library files on the new computer and restore each project on the new computer.
You do not need to reinstall the program on the new computer as it is already there.
One of the projects that you restore will be the one that you already have on the new computer. I would suggest that you backup that project on to the hard disk on the new computer before you start any restore from the old computer as the restoration of the library files from the old computer will overwrite all of the library files on the new computer.
When you finsh restoring all of the backup files from the old computer you should have all of the files necessary for your projects.
This procedure works if you used the defaults when you installed the projects on bothe computers when the programs were installed. It should also work if the projects originally were in different folders except you have to backup the library files for each of the projects instead of just backing up the library files once for all projects.