When running the Top Secret utility TSSXTEND, it abends with a U3044.
The old security files were defined with the AES feature. The new security files were defined without the AES feature.
It's not allowed to copy an AES security file to a non-AES security file, hence the abend U3044.
You have to define the new security file with the AESENCRYPTION or AES256ENCRYPT TSSXTEND option.
See the links below:
Convert DES to AES 128