Yes. Once a Publisher Pitch becomes an active campaign, it's managed and measured exactly like the rest of your Linkby activity.
Where to look
Campaign details, placement and budget information sit with the campaign
Performance reporting works the same way — see Where can I see the performance of my campaign?
Conversion tracking and UTM tagging are unchanged — see Am I able to track conversions within Linkby?
The campaign stays linked to the pitch
The campaign details reference the Publisher Pitch it came from, and the participation section records when the publisher pitched it and when you accepted. So you can always see where an opportunity originated.
Billing
Invoicing works the same as any other Linkby campaign.