The Logic Off Topic list

Hi

Here's a time conversion that won't work for me.
I have a tune in 4/4 that would read easier if it was in 12/8.
When I change the time signature in the transport window  the results 
are unreadable.
The quarter note does not change to a dotted quarter and the subdivided 
bar does not conform to 4 groups of 3 (a value of 3 8th notes )
I've tried all quantize possibilities I can think of.
Also I've exhausted the help file suggestions (info) No luck.
Has any one been successful with this conversion?
Or will I have to rewrite the entire file?

Thanks
Jim