Ledger Lines disappear from invisible notes

When I make two notes with ledger lines, and one of them has more ledger lines, if I make the higher one invisible, all the ledger lines, including those for the lower note, disappear. Right now I am using this as a workaround for the playback of harmonics on strings, so I make the note two octaves above invisible to playback what I want. However, the ledger lines for the written notes then disappear.