I just exchanged one rare borg salvage against a MKX piece and couldnt select MKXI. i think thats a bug

how is this a bug? a mk x requisition costs one rare borg salvage. a mk xi requisition costs 2 rare borg salvage. if you traded one rare borg salvage in for a requisition you would have rightly received a mk x requisition. you can only purchase mk x items with a mk x requisition. you can also only purchase mk xi items with a mk xi requisition. you can not exchange a mk x requisition and one rare borg salvage for a mk xi requisition or item.

I agree with this post. And so does the wiki.

http://www.stowiki.org/Rare_Borg_Salvage

Someone make a chart at some point that had all the information on the various types of Borg Salvage/Borg tech/EDC's and what you could get, but I can't find it.