Again, would the media even know to look for it? They might have assumed there was only one SW. Federal SW's are often only filed by index number. If they didn't know to ask for the index number or if the FBI wasn't sharing, then they would have a difficult time finding it. . .that's if they even thought to look for one.
We know other things were taken that day. Did they just spend all that time doing stuff to not take it. If they were vacuuming that carpet, what did they do with the contents of the bag? Just dump it out and not take it? That doesn't make any sense.
MOO
It certainly seems like there were more than 7 items taken and it seems like a really bizarre (and/or possibly detrimental) investigative technique to package up evidence, remove it from the house and then change your mind about it and decide to leave it. KWIM? There has got to be a piece of the puzzle missing.
ETA: watching the footage the day of the warrant execution, there was a tech that photographed the ground by the fence in the back or side yard and then noted something on a clipboard, along with a person in street clothes. I watched it on the live feed. That certainly looked like evidence recovery to me. I suppose it's possible that recovery was one of the 7 items listed on the warrant return but it kind of seems odd to think any of those items listed on the warrant return were out in the yard by the fence.