We lost our lien position a few years ago. We were the 1st to file, and we had attachment -- but borrower came in and paid us off. We filed a continuation anyway -- borrower came back in and borrowed money -- loan officer didn't do a search (seriously, its $1 in my state) because officer knew we had a blanket lien on all equipment and knew we were in first position.
Well, we weren't. Borrower had gone down the street after he made the loan with us in which we had 1st position and that lender took a chance to be in line behind us. When borrower paid us off and we no longer had attachment to anything active -- we are now in second position. We have titled collateral so, we are okay -- but you have to have something to attach to.
Sure, you CAN continue those UCCs forever and forever, but you DO have to have an active loan to maintain lien position. And if there's ANY gap in you having a loan, do those searches to ensure your position.