Deleted CSR file

I think I made a mistake and deleted a single CSR file in my certs directory.  What can I do.  New certificates are acting strangely.

IE common names dont match.

CSR (Certificate Request Sign) is used to the certificate authority (CA) to sign your certificate request.
If you already submitted your certificate to the CA to sign it, and if the CSR was deleted, but you already get the certificate, is not problem.
The problem would be if you lost the key.

If you didn't still submitted it, just generate another CSR to submit to the CA.

Regards,
Netino