Output vcf incompatible with PureCN

Dear Li Tai !
I tried to feed the output of SomaticSeq into PureCN, but failed. So currently i am doing a re-calling with Mutect2 on all SomaticSeq variants to generate Mutect2 output which i can then feed into PureCN. This is time consuming and error prone.
Do you know if it is possible to somehow feed SomaticSeq output directly into PureCN ?
Do you have any ideas/thoughts on this ?
Thanks, KK