I own shares in PRS.OS (Prosafe, Oslo Exchange). My server for price updates is Yahoo-UK/Ireland. Price is retrieved in krone (KRW) but displays in $USD - perfect & just the way I want it to work.
When setting a Price Alert, however, it assumes KRW - (would be nice to specify which currency you want the alert to be based upon or some indication in which currency it is expecting the alert to be expressed) and when exiting the Alert box, the line in Portfolio Editor is no longer shown in $USD but rather in KRW. A 'retrieve selected price' for this single holding will revert the display back to USD.