func isLoadListListEdited() -> Bool {
        var allLoads = [Load?]()
        for pillar in self.schematic.pillarList {
            if let pillarView = pillar {
                allLoads.append(pillarView.load)
                let pillarLoads = pillarView.childrenView.map({return $0.load})
                allLoads.append(contentsOf: pillarLoads)
            }
        }
        let validLoads = allLoads.filter({$0 != nil})

        for validLoad in validLoads {
            if let load = validLoad {
                let originalMaterialMoment = load.loadHeader.getOriginalMaterialMoment()
                let cuurentMaterialMoment = load.loadHeader.materialMoment
                if originalMaterialMoment != cuurentMaterialMoment {
                    return true
                }
            }
        }

        let editedLoads = validLoads.filter({$0!.editedLoadDetails.count > 0})
        if editedLoads.count != 0 {
            for editedLoad in editedLoads {
                if let load = editedLoad {
                    for loadDetail in load.editedLoadDetails {
                        if self.isLoadDetailEdited(loadDetail) == true {
                            return true
                        }
                    }
                }
            }
        }

        return false
    }