Google has emailed me saying "Migrate your App Engine projects from the legacy SDK (appcfg)" for 3 of my projects. I don't use appcfg, I use mvn to deploy my software. I've 6 projects in total on GAE and have compared the pom files and build files and they are identical. I thought it was because I'm using an older appengine-api, but they are fairly up to date and all use the same version:
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-1.0-sdk</artifactId>
<version>1.9.58</version>
</dependency>
What I am missing here? Thanks Tim