I would restore from the latest backup you have. Then run repair.exe which is located in the UFT folder. You do this with UFT closed.
Open UFT and run Utilities - Project - Check to see if you ahve any problems that need to be repaired. If you do you can run Utilities - Porject - Check with the repair option checked. I would not add birth and death records during either of the processes.
If this does not fix your problem let us know. Tech support for this program is non existant and they should never have told you to reinstall the program without telling you to do a custom install and preserve your library files.