diff --git a/ivy/src/main/scala/sbt/CustomPomParser.scala b/ivy/src/main/scala/sbt/CustomPomParser.scala
index 668aa5cff..277b50900 100644
--- a/ivy/src/main/scala/sbt/CustomPomParser.scala
+++ b/ivy/src/main/scala/sbt/CustomPomParser.scala
@@ -30,9 +30,14 @@ final class CustomPomParser(delegate: ModuleDescriptorParser, transform: (Module
 }
 object CustomPomParser
 {
+	/** The key prefix that indicates that this is used only to store extra information and is not intended for dependency resolution.*/
+	val InfoKeyPrefix = "info."
+	val ApiURLKey = "info.apiURL"
+
 	val SbtVersionKey = "sbtVersion"
 	val ScalaVersionKey = "scalaVersion"
 	val ExtraAttributesKey = "extraDependencyAttributes"
+	private[this] val unqualifiedKeys = Set(SbtVersionKey, ScalaVersionKey, ExtraAttributesKey, ApiURLKey)
 
 		// packagings that should be jars, but that Ivy doesn't handle as jars
 	val JarPackagings = Set("eclipse-plugin", "hk2-jar", "orbit")
@@ -75,8 +80,7 @@ object CustomPomParser
 	}
 	private[this] def artifactExtIncorrect(md: ModuleDescriptor): Boolean =
 		md.getConfigurations.exists(conf => md.getArtifacts(conf.getName).exists(art => JarPackagings(art.getExt)))
-	private[this] def shouldBeUnqualified(m: Map[String, String]): Map[String, String] =
-		m.filter { case (SbtVersionKey | ScalaVersionKey | ExtraAttributesKey,_) => true; case _ => false }
+	private[this] def shouldBeUnqualified(m: Map[String, String]): Map[String, String] = m.filterKeys(unqualifiedKeys)
 	
 	private[this] def condAddExtra(properties: Map[String, String], id: ModuleRevisionId): ModuleRevisionId =
 		if(properties.isEmpty) id else addExtra(properties, id)
diff --git a/ivy/src/main/scala/sbt/IvyActions.scala b/ivy/src/main/scala/sbt/IvyActions.scala
index ca493963e..66a00f615 100644
--- a/ivy/src/main/scala/sbt/IvyActions.scala
+++ b/ivy/src/main/scala/sbt/IvyActions.scala
@@ -138,7 +138,7 @@ object IvyActions
 
 	def processUnresolved(err: ResolveException, log: Logger)
 	{
-		val withExtra = err.failed.filter(!_.extraAttributes.isEmpty)
+		val withExtra = err.failed.filter(!_.extraDependencyAttributes.isEmpty)
 		if(!withExtra.isEmpty)
 		{
 			log.warn("\n\tNote: Some unresolved dependencies have extra attributes.  Check that these dependencies exist with the requested attributes.")
diff --git a/ivy/src/main/scala/sbt/IvyInterface.scala b/ivy/src/main/scala/sbt/IvyInterface.scala
index 6a7381831..159c53b7a 100644
--- a/ivy/src/main/scala/sbt/IvyInterface.scala
+++ b/ivy/src/main/scala/sbt/IvyInterface.scala
@@ -11,11 +11,16 @@ import org.apache.ivy.util.url.CredentialsStore
 
 final case class ModuleID(organization: String, name: String, revision: String, configurations: Option[String] = None, isChanging: Boolean = false, isTransitive: Boolean = true, isForce: Boolean = false, explicitArtifacts: Seq[Artifact] = Nil, exclusions: Seq[ExclusionRule] = Nil, extraAttributes: Map[String,String] = Map.empty, crossVersion: CrossVersion = CrossVersion.Disabled)
 {
-	override def toString =
+	override def toString: String =
 		organization + ":" + name + ":" + revision +
 		(configurations match { case Some(s) => ":" + s; case None => "" }) +
 		(if(extraAttributes.isEmpty) "" else " " + extraString)
-	def extraString = extraAttributes.map { case (k,v) => k + "=" + v } mkString("(",", ",")")
+
+	/** String representation of the extra attributes, excluding any information only attributes. */
+	def extraString: String = extraDependencyAttributes.map { case (k,v) => k + "=" + v } mkString("(",", ",")")
+
+	/** Returns the extra attributes except for ones marked as information only (ones that typically would not be used for dependency resolution). */
+	def extraDependencyAttributes: Map[String,String] = extraAttributes.filterKeys(!_.startsWith(CustomPomParser.InfoKeyPrefix))
 
 	@deprecated("Use `cross(CrossVersion)`, the variant accepting a CrossVersion value constructed by a member of the CrossVersion object instead.", "0.12.0")
 	def cross(v: Boolean): ModuleID = cross(if(v) CrossVersion.binary else CrossVersion.Disabled)