[mass55th]

If that's the case, then we should have heard about Mueller turning over the evidence he had when the Judge's order in December was made. I did a search and found info on the December order, then found another order by the same Judge in February. This one was for ‘Exculpatory Evidence’. This February 23rd article from Jonathan Turley is interesting:

Did Mueller Withhold Evidence From Michael Flynn?

[Alberta's Child]

If that's the case, then we should have heard about Mueller turning over the evidence he had when the Judge's order in December was made.

I don't know why you use the word "should" here. This is not public information that is readily available to the media. The only reason we'd hear any of it is if someone from one of the legal teams decides to release it.

If Sara Carter is reporting this, I suspect it came from Flynn's legal team, or from someone in the DOJ who is friendly to Flynn and knows what Mueller is up to.