Models Not Automatically Imported From Subfolders

I have split my models (in ‘protected/models’) into two subfolders: ‘data’ and 'form".

Why do I have to change main app’s configuration from:

‘import’=>array

(

‘application.models.*’,

[size=2]to:[/size]

‘import’=>array

(

‘application.models.data.*’,

‘application.models.form.*’,

[size="2"]Why all models are not auto-imported from subfolders, just as it happes for extensions? What do I missed?[/size]

(code tag seems to be not working, entire visual editor seems to be failing in Chrome, so this post is poorly formatted – sorry!):