How to use helm to find files that match regex in subdirectory?

I had this functionality working until I recently revamped my init files. Now, I can't figure out how to get it back.

I use helm-find-file (mapped to C-x C-f) for finding and opening files. I used to be able to execute the following keystrokes to find the location of a file in a sea of subdirectories. The following shows a sample project:

~/src/Bar/Bar.cpp ~/src/Foo/Foo.cpp ~/src/FooBar/FooBar.cpp 

If I executed the following, the file ~/src/Foo/Foo.cpp would open.

C-x C-f ~/src/*/Foo.cpp <return> 

If I executed the following from my home directory, helm would let me select which file to open, either ~/src/Foo/Foo.cpp or ~/src/FooBar/FooBar.cpp

C-x C-f ~/src/*/Foo* 

Since I revamped my init files, I can't figure out what setting I nixed. Can anyone point me in the right direction of how to acheive this functionality again?