maven and spring boot sucks

pom.xml

<!-- IT WORKS -->
<dependencyManagement>
	<dependencies>
		<dependency>
	            <groupId>org.springframework.data</groupId>
	            <artifactId>spring-data-releasetrain</artifactId>
	            <version>${spring-data.version}</version>
	            <type>pom</type>
	            <scope>import</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-dependencies</artifactId>
			<version>${spring.boot.version}</version>
			<type>pom</type>
			<scope>import</scope>
			<exclusions>
				<exclusion>
					<artifactId>slf4j-log4j12</artifactId>
					<groupId>org.slf4j</groupId>
				</exclusion>
			</exclusions>
		</dependency>
	</dependencies>
</dependencyManagement>
	
<!-- IT DOESN'T WORK -->
<dependencyManagement>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-dependencies</artifactId>
			<version>${spring.boot.version}</version>
			<type>pom</type>
			<scope>import</scope>
			<exclusions>
				<exclusion>
					<artifactId>slf4j-log4j12</artifactId>
					<groupId>org.slf4j</groupId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
	            <groupId>org.springframework.data</groupId>
	            <artifactId>spring-data-releasetrain</artifactId>
	            <version>${spring-data.version}</version>
	            <type>pom</type>
	            <scope>import</scope>
	        </dependency>
	</dependencies>
</dependencyManagement>

true