I just booked a Sweden-originating DONE4 for my wife through the AA RTW desk and anticipate no problems at all in getting TAL to punch it out next week.

(The poor dear - she has been serially jerked around by yours truly over RTW origination points vs. all-award itineraries vs. a heady mixture of BA, Turkish, El Al and Ethiopian airlines point-to-point yoga... Finally did the math and figured with her flying plans over the next few months ARN makes more financial sense than MRU, due to access costs and BA nuisance fees.)

One thing we've discovered - almost hesitate to reveal this - but for those in N. America wanting to get to Sweden one way cheaply, MH runs a nonstop three days a week from EWR to ARN, all-in one way price in August (in Y) is US$402. 777 is totally empty according to EF, so even though it's Y (34" pitch, AVOD, seats with legrests) one can stretch out and not have a bad night of it.