Confluence 8.9 release beta available now

I am still having issues with using com.atlassian.confluence.event.events.admin.ImportFinishedEvent which depends on com.atlassian.confluence.importexport.ImportContext which seems to be part of the confluence-jar in DEV mode (which i thought we should use in preparation for Confluence 9). This is the error message I receive:

[INFO] [talledLocalContainer] Caused by: org.osgi.framework.BundleException: Unable to resolve xxx [305](R 305.0): missing requirement [xxx [305](R 305.0)] osgi.wiring.package; (osgi.wiring.package=com.atlassian.confluence.importexport) Unresolved requirements: [[xxx [305](R 305.0)] osgi.wiring.package; (osgi.wiring.package=com.atlassian.confluence.importexport)]

These are my dependencies:

      <properties>
        <confluence.version>8.9.0-beta2</confluence.version>
        <platform.version>6.5.8</platform.version>
        <jdk.version>11</jdk.version>
      </properties>
      <dependencyManagement>
        <dependencies>
          <dependency>
            <groupId>com.atlassian.confluence</groupId>
            <artifactId>confluence-plugins-platform-pom</artifactId>
            <version>${confluence.version}</version>
            <type>pom</type>
            <scope>import</scope>
          </dependency>
          <dependency>
            <groupId>com.atlassian.platform.dependencies</groupId>
            <artifactId>platform-public-api</artifactId>
            <version>${platform.version}</version>
            <type>pom</type>
            <scope>import</scope>
          </dependency>
          <dependency>
            <groupId>com.atlassian.platform.dependencies</groupId>
            <artifactId>platform-deprecated-public-api</artifactId>
            <version>${platform.version}</version>
            <type>pom</type>
            <scope>import</scope>
          </dependency>
        </dependencies>
      </dependencyManagement>

This is part of my configuration, using AMPS 8.14.1:

<atlassian.dev.mode>true</atlassian.dev.mode>
<upm.plugin.upload.enabled>true</upm.plugin.upload.enabled>            <confluence.osgi.treatDeprecatedPackagesAsPublic>true</confluence.osgi.treatDeprecatedPackagesAsPublic>

Typically I would resolve this by setting the dependency with scope ‘compile’ and add banningExcludes. What is the solution here? I assume it is something obvious, but I cannot figure out how to resolve this.

Just for reference: I posted a similar question here a couple of days ago: Preparing for Confluence 9.0 - EAP coming soon - #82 by rr1