How to migrate from Fabric Crashlytics to Firebase Crashlytics?
问题 I have an app that logs crashes and non-fatals to Fabric Crashlytics and uses Firebase Analytics to log analytics events. I want to migrate from Fabric Crashlytics to Firebase Crashlytics. In addition I want to save historical data from Fabric during the migration. When I try to do it with provided mechanism of Firebase Migration (https://fabric.io/firebase_migration/apps) I cannot do it in a way I want to. In particular, I cannot provide existent Firebase project ID for migration. I see