Doc Feedback: Need clearer details about how to migrate from apim 4.2. to apim 4.5

Location : https://apim.docs.wso2.com/en/latest/install-and-setup/upgrading-wso2-api-manager/upgrading-api-manager/
APIM 4.5.0

Note on page:
If you are upgrading from WSO2 API Manager 4.2.0 to 4.5.0, you can experience a seamless product upgrade with no data migration. This pivotal change facilitates a smooth transition for current API Manager 4.2.0 users to the latest version, eliminating the need for complex migrations.

Problem:
We don't indicate how to achieve this. It "sounds like" that customers need to just install APIM 4.5 on top of 4.2. But is the migration script required? (Internal migration documentation review indicates that a migration is required but the old migration script/jar approach is not required now.)

Reason for this issue to be raised:
Customer Success case asking for further clarification about how to achieve this.

Additionally with the profile change a formal migration/transition is required if customer is not on an all-in-one deployment.

Start with the upgrading API Manager page linked in the issue and review the APIM 4.2.0 to 4.5.0 guidance. Clarify whether a migration step is required, how the profile change affects non-all-in-one deployments, and what customers should do; the page is done when these transition steps are explicit.