deploy-file does not use repository <url> in the same way as deploy

We use an own lifecycle here which creates a zip file instead of a jar file.
So we use

org.apache.maven.plugins:maven-install-plugin:install,org.apache.maven.plugins:maven-install-plugin:install-file

which installs the zip file correctly.
Additionally I now wanted to also allow deploying of this zip file to nexus by:

org.apache.maven.plugins:maven-deploy-plugin:deploy,org.apache.maven.plugins:maven-deploy-plugin:deploy-file

in the pom I have then:

	<properties>
		<file>${project.build.directory}/${project.artifactId}-${project.version}.zip</file>
        </properties>


	<build>
		<pluginManagement>
			<plugins>
				<plugin>
					<groupId>org.apache.maven.plugins</groupId>
					<artifactId>maven-install-plugin</artifactId>
          <version>2.3.1</version>
					<executions>
						<execution>
							<id>install-service-zip</id>
							<goals>
								<goal>install-file</goal>
							</goals>
						</execution>
					</executions>
				</plugin>
        
        <plugin>
					<groupId>org.apache.maven.plugins</groupId>
					<artifactId>maven-deploy-plugin</artifactId>
          <version>2.7</version>
					<executions>
						<execution>
							<id>deploy-service-zip</id>
							<goals>
								<goal>deploy-file</goal>
							</goals>
						</execution>
					</executions>
				</plugin>

			</plugins>
		</pluginManagement>

as well as settings for the repositories within the maven settings.xml.

As said the install process works perfectly, but I have trouble with the deploy-file.
When working without the deploy-file (only with the deploy) everything also works correct for the deployment.
After adding the deploy-file as shown above I come into trouble, because beside the <file> property the deploy-plugin requests for the required <url> parameter.
I wonder about this, because I assumed that the <url> parameter will come from the choosen repository (release vs snapshot) settings?

When I set the <url> as property beside the <file> property, then I can deploy a snapshot.
But to deploying snapshot/release this will not work.

In deploy the url parameter is implicitly correctly choosen, why not in deploy-file? this would make the url parameter optional.
So I see this as a bug/feature, because when deploy works in this way, then deploy-file should work analogous. Or have I missed something here?