Grails: Adding an inline plugin to BuildConfig.groovy does not add the plugin as a module

IDEA IU-138.1696.2
Grails version 2.2.4

If I add an inline plugin at the end of BuildConfig.groovy
grails.plugin.location.'my-plugin' = '../my-plugin'
I don't get a question about reloading configuration. Didn't I get that in previous versions?
The myPlugin-inplacePlugin module is not added to the project. No matter what I try, "Synchronize Grails settings" or "Run target: grails –refresh-dependencies compile". The module is not added. I have to add it manually. But it's a lot of work to get every source/test/exclude folder right in a Grails module.

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*Imported from [IDEA-128857](https://youtrack.jetbrains.com/issue/IDEA-128857) · Type: Bug · Votes: 3*
*Comments, attachments, dates and reporter are not part of the export — follow the link above for the full history.*

Reproduce the issue with Grails 2.2.4 by adding the inline plugin declaration to BuildConfig.groovy, then inspect the handling behind Synchronize Grails settings and grails --refresh-dependencies compile. Done means configuration reload is offered and the myPlugin-inplacePlugin module is created with its project folders configured automatically.

Written by the indexing model from the issue text.