Axle coming out of differential is a non issue. It's differential gear oil not xm fluid in there and when not moving no amount of consequence is near the seal. Sounds like it didn't even come all the way out.

You do need to confirm the c-clip is fully engaged by pulling on and make sure the inner shaft won't move outward.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)