Can't use EclipseKeys unqualified when using sbteclipse is global plugin

I have installed sbteclipse as a global plugin (since in most of my builds nothing depends on it). I have some configuration for it in ~/.sbt/0.13/sbteclipse.sbt, that uses EclipseKeys unqualified. When I switched from 2.5.0 to 4.0.0, I needed to add an import there for EclipseKeys. This is not needed if I place the setting in build.sbt, whether the plugin is installed locally or globally. This is also not needed with sbteclipse 2.5.0 (I rechecked) or 3.0.0.

Relevant settings from ~/.sbt/0.13/plugins/plugins.sbt:

resolvers ++= Seq(
  Classpaths.typesafeResolver,
  Classpaths.sbtPluginReleases,
  Opts.resolver.sonatypeReleases
)

addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "4.0.0")

and from ~/.sbt/0.13/sbteclipse.sbt:

import com.typesafe.sbteclipse.plugin.EclipsePlugin.EclipseKeys //** REQUIRED**, but shouldn't be.

EclipseKeys.withSource in ThisBuild := true

Actual error without the import:

/Users/pgiarrusso/.sbt/0.13/sbteclipse.sbt:2: error: not found: value EclipseKeys
EclipseKeys.withSource in ThisBuild := true
^
[error] Type error in expression
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore?

With the import, output of sbt about:

[info] Loading global plugins from /Users/pgiarrusso/.sbt/0.13/plugins
[info] Loading project definition from /Users/pgiarrusso/AeroFS/Repos/chess-bluevelvet/project
[info] Set current project to chess (in build file:/Users/pgiarrusso/AeroFS/Repos/chess-bluevelvet/)
> about
[info] This is sbt 0.13.8
[info] The current project is {file:/Users/pgiarrusso/AeroFS/Repos/chess-bluevelvet/}chess-bluevelvet 0.1-SNAPSHOT
[info] The current project is built against Scala 2.11.6
[info] Available Plugins: sbt.plugins.IvyPlugin, sbt.plugins.JvmPlugin, sbt.plugins.CorePlugin, sbt.plugins.JUnitXmlReportPlugin, growl.GrowlingTests, com.orrsella.sbtsound.SbtSound, np.Plugin, org.sbtidea.SbtIdeaPlugin, com.typesafe.sbteclipse.plugin.EclipsePlugin, org.ensime.sbt.Plugin, ls.Plugin, com.typesafe.sbt.SbtStartScript, sbtman.Plugin
[info] sbt, sbt plugins, and build definitions are using Scala 2.10.4

Reproduce the issue with the global plugin configuration in ~/.sbt/0.13/plugins/plugins.sbt and ~/.sbt/0.13/sbteclipse.sbt, using sbteclipse 4.0.0 and sbt 0.13.8. Compare global and build.sbt loading, then verify that EclipseKeys.withSource in ThisBuild works without an import in the global configuration.