Cremation turns the old form into ash, and tradition reads it as total transformation and release. The dream speaks of letting go completely, not of any literal loss.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.