Thunderdbird Profile in Linux .thunderbird directory existing home dir during upgrade of Centos 6 to Centos 7

I have recently upgraded from Centos 6 to Centos 7. Everything works on my Thunderbird. However, I cannot properly CAC/PKI sign and CAC/PKI encrypt my email. When testing on the same Centos7 system using a different username, but same CAC card , and obviously the same email address "sending only", and same Thunderdird, then it works. I am thinking there is something in my .thunderbird dir/profile that prevents me from sending a valid CAC signed email. The email sends, but on receipt it says "The digital signature on this message is invalid or Not Trusted" . The error under details says "The message contents may have been altered" . I have all the cert chains and intermediate trusted certs loaded. Again, with the exact same Centos 7 system but a different username and setting up the same Thunderbird with the same email to test my CAC it works fine and my CAC signed email is Trusted and Valid. Where should I look in my .thunderdbird profile that could have some old settings or corruption from the Centos 6 and the older Thunderbird version profile that I can clear out or check? For a little more background, my home directory is the same from Centos6 to Centos 7, as it is a Netapps FAS mounted home directory volume. Hence, I believe there is something in my .thunderbird profile that is causing this issue. A brand new username works like I said above, but my real username with the older .thunderbird profile from my home directory under my production username does not. I am running Thunderbird 91.4.0- 64bit Any suggestions would be appreciated on what I can clear or edit in .thunderbird dir/profile. I would rather not delete the .thunderbird and then try importing all my old email dirs and try restoring that way. Please advise. Thanks in advance! Dhyan