Expanding Map Elements

As mentioned above, map elements correspond with the structure elements. In some cases though structures can be huge with thousands of elements most of which are not mapped. For performance reasons map elements are only materialized if they are actually used in mapping, which happens as you expand the map elements in the designer.

So when editing a map, and simply expanding a map element, you may see the map become unsaved (the asterisk appears in the editor tab); this is normal and indicates that new map elements have been materialized.

When searching through a map, all possible map elements (being searched) are temporarily materialized and then discarded at the end of the search so as not to have a large number of unused elements.