I dont know if this is a bug or limitation. I want a \+44.@ using a Mob Route Filter to match a dialled number of +447917123456, so have a route filter with a tag of Mobile Access and Mobile Subscriber exists (so no National Access i.e. the leading 0).
US Cellular - Baraboo 906 Us Highway 12, Ste 102, Baraboo WI 53913 Phone Number: (608) 356-9380
From Madison: I-90 westbound to exit #92, Hwy 12 (Lake Delton/Wisconsin Dells). Turn north (right) at the bottom of the exit ramp onto Hwy 12. At the first stoplight (Meadowview Drive), turn right to Kalahari Drive. Please note: GPS and MapQuest users may need to use the city of Baraboo, Wisconsin.