It's not possible to do from a xara file. They obviously have headers to say they are Flash 8 (AS2) generated swf's. The link you supplied is only allowing AS3 swfs to load & play older AS2 swf files. (Flash allows swf's to load swf' to load swf's etc)

Perhaps the application vendors could help if you explained the situation, after all there can't be much, if any AS in your swf file.