Custom layout not available after browsing several levels

Hi,

I have assigned a custom layout set to a repository and checked "Apply settings to all subfolders". Then the layout set takes effect in the folder, and about 4 levels navigation inside. Like

/myrep

/folder1

/sub2

/sub3

However, when I navigate deeper, like /myrep/folder1/sub2/sub3/sub4/, the layout disappeared.

So can I set how many levels the layout set can take effect?

Thanks,

Ray