Hi all,

A quick update on this, got it sorted out thx to Umbraco Support.

Here is how to fix:

Add:

 [ComposeAfter(typeof(AzureBlobComposer))]

And, if you are compiling it in Core:

using Umbraco.Cloud.StorageProviders.AzureBlob;

Before your custom method. So your whole method looks like this:

[RuntimeLevel(MinLevel = RuntimeLevel.Run)]
[ComposeAfter(typeof(AzureBlobComposer))]
public class MyComposer : IUserComposer
{
    public void Compose(Composition composition)
    {
        composition.RegisterUnique<IMediaPathScheme, OriginalMediaPathScheme>();
    }
}

That's it! Your old links will be kept on Azure Blob Storage. Thx.