Connecting EP6.0 to ECC5.0 and IDES 4.7

Hi all, do you think this is possible? Would like to hear your views. I created 2 systems via <b>System Configuration</b>. Am able to run transactions on both systems with GUI for windows, but the tricky part is GUI for HTML as the UME configuration is pointed to IDES 4.7, even if I defined a transaction with the ECC5.0 alias the GUI created will point to IDES 4.7

FYI: I use ITS for transactions.

Thank you all for your time!