it was in first edition too.
remember, it is ONLY for liberated terrs, so for US to get income from tunis, italy has to have taken it first, you cannot simply take controll over the french terrs, you need to kick the axis out of said terr before you can collect for it.
so usually you will not get allied income for the french part of subsaharn africa, unless things go really bad for a time and egypt falls.
the main difference between this and how you play is that italy might consider not taking french north africa to deny the allied the potential income from retaking it.
All the UNTAKEN terretories are ofcourse in limbo.
if you read the liberate capitol rule, it states that once the capitol is retaken, all held terretories are reverted. so if us is collecting for normandie, north africa and bordaux, then france gets imidiatly control over those, and US cannot produce in the factories anymore. this is perhaps the main reason you want to wait with taking paris, since you will lose 2 american factories in mainland europe.