The usual failure
Campaigns look good in ads. The thank-you page strips the parameters. The CRM reports 'website' for everything expensive.
What to make true
UTMs survive into the contact. Source, offer, and campaign stay separate. Reporting that cannot name a source is cosplay.
Worked example
Keep it this plain. A team uses utm parameters as if buying the software installed the meaning. It did not. Campaigns look good in ads. The thank-you page strips the parameters. The CRM reports 'website' for everything expensive. The move is not a new integration. UTMs survive into the contact. Source, offer, and campaign stay separate. Reporting that cannot name a source is cosplay.