you would be able to get much more thorough help for this on our discord server

go ahead and join and then open a thread in #db-migration-help

Look for any services with a connection URL to your database, and update it to the newly migrated one.

I am pretty new…how do I do that? Also, I did delete the old DB.

I don't understand how to connect the MongoDB that's been migrated to the Railway.app. It must be pointing to the old pre-migrated DB that was deactivated. HELP!!

update the database connection details to the new database's connection details on whatever is trying to connect to the old database.

are those details in the database or the Railway software?

you will find the database connection details in the variables tab of the database service, use them in whatever is trying to connect to the old database.

I think you solved it! I needed to take the new DB path and assign it to the new railway software.
Many thanks!