AFE7950EVM: How to use the external REF_CLK_LOW

Using the TSW14J58EVM  DC182_A7 to connect to the AFE7950EVM DC135 REV A

We have modified the AFE7950EVM to use the REF_CLK_LOW as an external input (bypassing the on board LO and REF_CLK_HIGH) such that the AFE7950 internally upconverts to get the Fdac and Fadc. 

Please are you able to advise the script settings that need to be changed in order to make this work?

Also, does the LMK_CLK_IN still need to be fed a ~1.5 GHz tone in this case?

Thanks, David.