Under the Bona Fide Residence Test, the "uninterrupted period including entire tax year" seems to make an exception for temporary trips (provided a "definite, temporary purpose" with "clear intention of returning from such trip, without reasonable delay").
If a US resident client:
began taking up residence in a foreign country from Jan. 15-Aug. 15 traveled back to the U.S for a business trip (not declaring residency there) from Sep. 15-Oct. 15, and went back from Nov. 15-Dec. 15,
are they a bona fide resident of that foreign country for that tax year? Or, is the travel period considered an interrupted period?
Any help is appreciated.