I have a similar problem in that I place labels distributed by other labels with the distributor label. Often, labels change distributors, or, I find out that a label was distributed by another label, late in my life. When the latter occurs, I only remember where that label was shelved for the first 40 or 50 years of my collecting, and can't remember what label distributed it. Worse yet, the distributing label is often in a different city, so, it may be located on a different wall, or even in another room. So, then it is virtually lost to me. And, on top of that, all my records aren't even stored in the same city, country or even continent. I store records in two different cities in USA (very far apart), Canada, The Netherlands, Denmark and Germany, and often can't remember where a given record is at a given time. I have been unable to provide record scans to Ace/Kent at certain times because I was in the wrong country at the time, or forgot which record label distributed a small label, that I had discovered in recent years, and had shelved in the same place for 50 years, but recently moved.