Hi @Jason Wilson Greetings! Welcome to Microsoft Q&A forum. Thank you for posting this question here.
As per the official retirement announcement, the API Management stv1
compute platform version will be retired effective 31 August 2024. Please refer the article - stv1 platform retirement (August 2024) for more information on this.
I request you to look into the article Migrate an API Management instance hosted on the stv1 platform to stv2 that will guide you with the migration options and help you with the process.
If you run into any further issues, you can post a question on this forum with more specifics and the community/SMEs on this forum would be happy to assist you. If you have a support plan, you can create a support request to get additional assistance with your migration.
If the response helped, please do click Accept Answer and Yes for the answer provided. Doing so would help other community members with similar issue identify the solution. I highly appreciate your contribution to the community.