The final step of the certificate process is to save the complete certificate as a PKCS#12 (p12) file to external media such as a floppy disk, CD, flash drive or memory stick.
If you experience PC failure, hard disk crash, or loss of files you can restore your LoTW certificates by loading your p12 file into TQSL CERT.
(TQSL CERT > FILE > LOAD CERTIFICATE)
The postcard password and theTQ5 and TQ6 files have performed their respective tasks and it is not necessary to save any of these items. However you must save your certificate as a p12 file to be able to recover your complete certificate.
Be sure to save this p12 to external media. If you save this file to your computer and the computer crashes you will not be able to recover the file.