Maestro: invalid property mapping should be cleared when saving a layer in normal view

[gabrimonfa]

Maestro 4.0.0.6282

Suppose that a layer (A) is cloned to another one (B) that has similar stilization. Moreover, suppose that the layer A use some <PropertyMapping> that are not valid for the data resource of the cloned layer B.

When B is opened in normal view, only valid properties are selectable to be mapped in Property Pane. Invalid ones already defined in XML are not.

When B is saved it would be useful to get rid of all PropertyMapping previously defined in XML and to define only those that were checked in normal view (that are valid for the data resource).

Not doing this leads to fdo errors FDO_81_IDENTIFIER_NOT_FOUND

[jng]

Fixed r6525