Challenges with Continuing to Use Version 1.3 API in Power Automate Custom Connectors

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I'm currently using Version 1.3 of the API in Power Automate Custom Connectors, but our Anaplan systems have been upgraded to Version 2.0. I have a few concerns and I’m hoping to get some insights from this community:

  1. Compatibility and Functionality: Are there any known issues with maintaining the older API version in terms of compatibility or limitations in functionality that could affect our workflows?
  2. Security Concerns: Is there a higher risk of facing security vulnerabilities by continuing to use an outdated API version that might no longer be supported with updates or security patches?
  3. Support Lifecycle: Does anyone know if there's an anticipated end-of-life date for Version 1.3 of the API? Understanding this would be crucial for our migration planning.

Any guidance or resources you could share would be incredibly helpful as I navigate these concerns.