We have a few Json which we use to speed up the process of having to create applications from scratch.
This worked in version 6.6. After upgrading to 6.7+ it is not working. Now, the same files used in 6.6 are returning errors like:
FAILED: Failed to import APPLICATION "Tomcat-Template-2"
Internal error occurred; please contact your administrator 
Release : 6.7
Component : CA RELEASE AUTOMATION CORE
If you experience this issue then please open an issue with Technical Support.
As a workaround you can try:
If it returns with a "Response Code" = 200 and "Response Bode" showing "status : CREATED" then the workaround worked.