Bamboo Specs with custom Plugins will fail to publish after the first

Issue Summary

If Bamboo Specs contains the AllOtherPluginConfiguration configuration, it will successfully publish for the initial push. However any subsequent changes to the code, and pushes will not succesfully run the specs.

This happens for plugins which do not have their own specs configurations.

Expected Results

Specs get published, plans/builds are updated according to changed repository stored specs.

Actual Results

The below exception is thrown in the xxxxxxx.log file:

com.atlassian.bamboo.specs.api.exceptions.PropertiesValidationException: Plan import is blocked to prevent deleting plugin configurations on job Label Tag Version silently. If you are confident that you want to delete all plugin configurations, use com.atlassian.bamboo.specs.api.builders.plan.Job.noPluginConfigurations method explicitly.

Workaround

Edit specs to create a new plan, and the new plan will reflect the changes.