Thank you for posting your queries on Microsoft Q&A. From your query I could understand that you are looking for advisory on application behavior on ADAL to MSAL.
As per Migrate applications to the Microsoft Authentication Library (MSAL)
If you choose not to migrate to MSAL before ADAL support ends in June 2023, you put your app's security at risk. Existing apps that use ADAL will continue to work after the end-of-support date but Microsoft will no longer release security fixes on ADAL. Learn more in the official announcement
Please do let me know if you have any further queries in comments section.
Thanks,
Akshay Kaushik
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