I'm trying to export Oxygen from an MI electrolyzer. So far:

• Exporting it back out via pattern provider into AE2 makes it vanish
• Importing from a tank into AE2 makes it vanish
• Bucketing it manually into AE2, with either storage on disk or in a tank attached with external storage makes it vanish. I can take out Oxygen from already in an external storage attached tank.
• Importing from an TR or Coxinha tank into AE2 makes it vanish
• Pumping it out via MI pipes into a TR or Coxinha tank makes it vanish

What works is bucketing it manually into a TR or Coxinha tank, and pumping it with IR fluid pipes and servo into TR or Coxinha tanks also works.

Chlorine appears to have the same problem.