How to copy date field from Interaction to quote and hence to lineitem

Dear experts,
In our environment, An Interaction record is created by submitting catalog from third party portal to HPSM via restful API, using svcCartItem.
There is a "Desired Date" which is a date/time field pushed to interaction record.
However we need to push this same field to the related quote and evntually to the line items.

Tried to use fc of ocml.default and also link of ocml.copy.quote and screlate.incidents.ocmq.
Still unable to get this "Desired Date" field pushed to the line items.
Please advice.

Regards
PB