Contacts in Intuit Practice Management powered by Karbon won't be created by GoProposal unless explicitly added from the "Add a new contact to Intuit Practice Management" button. When clicking the button and filling out the details, the contact is created in Intuit Practice Management, available from the "Find a contact from Intuit Practice Management" drop-down and auto-populated in the Internal Details within GoProposal for fast creation of the proposal.

Furthermore, work in Intuit Practice Management won't be created by GoProposal until the proposal is finished, sent, signed, returned and marked as won by GoProposal.

Further reading:
When does work get created when using GoProposal?