I am creating a custom Umbraco MigrationPlan using a Composer and Component method as outlined in this article:

https://cornehoskam.com/posts/how-to-create-run-migrations-umbraco-v10

This allows me to automatically upgrade my document types and content to match changes for a particular application release, e.g. new properties, migrating data, etc.

So, I have created a migration step with the following code:

public class Cms0001(
    IMigrationContext context,
    IContentService contentService,
    IArticleService articleService
    ) : MigrationBase(context)
{
    private readonly IContentService _contentService = contentService;
    private readonly IArticleService _articleService = articleService;

    protected override void Migrate()
    {
        var articles = _articleService.GetArticles();
        ...
    }
}

When I inject the IArticleService dependency then the migration just doesn't work and no exception is generated. In debug, I can see that the Upgrader is executing the MigrationPlan but the Migrate method in this individual migration step is not being called.

When I remove the IArticleService injection then the Migrate method is being called correctly, so it's an issue with injecting that article service into the migration step.

The article service is being registered as follows:

services.AddScoped<IArticleService, ArticleService>();

When I change this to AddSingleton, then the Migrate method is being called with the injected article service but then I have to make the EF ApplicationDBContext a singleton and that's not advisable.

But, even when I make this all singleton, the call to the article service fails without an error when executing the migration plan, so that doesn't seem to be the solution either.