Both texts urn:cts:latinLit:stoa0292a.stoa004.opp-lat1 and urn:cts:latinLit:stoa0149p.stoa001.opp-lat1 are actually the same text but in two different textgroups.
According to http://referenceworks.brillonline.com/entries/der-neue-pauly/carmen-de-martyrio-maccabaeorum-e227210 , they have been attributed to both over the time and I am wondering if it could be a mistake from CSEL over the time.