Marcel Vellekoop

I'm trying to add some custom bumper and speaker symbols to use with the speaker array tool. What's the correct way to do this? Pactically it works by duplicating and edditing an existing symbol which already works with the tool, exept that the data record(s) won't update in the Resource Manager when i look after changing (for example) the ATS-BummpModData record in the Object Info Data tab and saving the drawing.