iTunes dropping album artwork

All of my files are in aiff. I get the album artwork by click and drag from the internet. Yes I use an external HD.

Kijanki: Are you referring to an iTunes properties location? Not sure what you are referring to there.

Zd542 I responded to your suggestion with a "Thank you I will try that" but I did not see my post in the thread - so, Thank you, I will try that! (again).

Thanks Kijanki - Like you, I have some albums where only track no. 1 has the artwork so now I know how to remedy that.

All of my artwork is showing now since spending hours re-populating the artwork from the internet. It looks like all the ones that I just re-populated have artwork for each track. That is a new development so things are improving.