From what I can tell, the stock mirror should be:
dvr: 8k0 857 535 d. 8K0857535 was superseded by this part number so the numbers below should be the direct replacements
pass:8k0 857 536 j. Same with the pass side.
The Euro convex mirror should be:
dvr: 8k0 857 535 e
pass: 8k0 857 536 f
The Euro wide angle blind spot mirror should be:
dvr: 8k0 857 535 f, or 8k0 857 535 h (auto dim)
pass: 8k0 857 536 g, or 8k0 857 536 g (auto dim)
Looking at the part numbers, it appears that they are different for 2010 vs. 2011. I can't tell you if there really is a difference because I haven't looked that closely but the first group is different which tells me they are not compatible. This is probably why your mirrors don't fit - ECS probably thought the mirrors were the same for 2011 and this is also the first I'm hearing of it. Please follow up if this is confirmed.
Could you take a picture of the front and back of the side view mirror to share what they look like? I would like to add the picture to the FAQ and I know some people here have 2010s and they could look at it as well.