Issue activating SCM_SNC_GEN2 and update to ECC bill of Lading number

Hello Expert

this is a question to all who have already active SCM_SNC_GEN2

I was also planning to activate SCM_SNC_GEN2, in my system

I was to use this to update Bill of lading and Carrier name at the time ASN

I don't want to use any other functionality ...I would like to  know following

1. 1. Does this data updated in SNC web UI for ASN on publish updated to ECC
2. 2. We have only implemented PO / SMI / Invoice collaboration (this is self billing); do you this my existing setup would require changes

Regards

Manas Malhotra