Add Bank Transfer to Dynamics GP with eConnect

We are using eConnect APIs in our .net project.

I want to add/modify/void the Bank Transfers in GP using eConnect.

With the Bank Reconciliation nodes available, I am unable to add Bank Transfers as <taBRBankTransactionHeader> do not allow CMTrxType=7 which is what we see in database for the bank transfers done from UI in CM20600 table.

Can someone please suggest how to handle this.

Thanks in advance..!

Any information on this is much appreciated..!!