Bug 85506 [Import/Export] [Preferences] import preference wizard uses a "save" dialog.
I20050215-2300 The import preferences wizard provides a browse button to select the file you wish to import from. However, it creates a Save As dialog. When you select the file you wish to import you are greeted with a warning that the file will be overwritten. No such thing occurrs, and otherwise the import succeeds.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/preferences/WizardPreferencesImportPage1.java
for (int j = 0; j < transfers.length; j++) {
                        PreferenceTransferElement element = transfers[j];
                        if (element.getFilter().equals(filter))
                            returnTransfers[index++] = element;                        
                    }
                }
                PreferenceTransferElement[] destTransfers = new PreferenceTransferElement[index];
                System.arraycopy(returnTransfers, 0, destTransfers, 0, index);
                return destTransfers;
            } catch (Exception e) {
                WorkbenchPlugin.log(e.getMessage(), e);
            } finally {
                try {
                    fis.close();
                } catch (IOException e) {
                    WorkbenchPlugin.log(e.getMessage(), e);
                }
            }
        }
        return new PreferenceTransferElement[0];
    }
    private boolean validFromFile() {
        File fromFile = new File(getDestinationValue());
        return fromFile.exists() && !fromFile.isDirectory();
    }
    /**
     * @param composite
     * 
     */
    protected void createTransferArea(Composite composite) {