One policy record from bind to renewal. Every endorsement is a permanent dated version, renewals are drafted for you but bound by a person, forms attach by your own rules, and certificates print only from what is actually in force.
An as-of date resolves what the policy said on any day — so a claim dispute about the terms on the date of loss is a lookup, not paperwork archaeology.
Underwriting, producers, billing and claims work the same policy, so a claim always sees its policy and a policy always sees its claims.

One that changed mid-term. Ask what it covered on a date between the second and third change — and see how long the answer takes.