If added this issue to our new bugzilla  and planned to finally fix it for the 1.9.0 release.  https://bugs.eclipse.org/bugs/show_bug.cgi?id=529959
SubApp outputs not created during download
with 1.9.0 M2 this issues is solved.
The End is Near!
Dynamic Type Load Prototype
On our way to 4diac 1.9.0: Milestone 2 Released!
Update Site for 4DIAC-IDE hosted at SF.net
with the migration to Eclipse foundation this bug is outdated.