If there are multiple entries in Revit’s Constructions.xml list with the same name, Revit will use the entry which is last in the sequence. Because of this, an entry which has the same name in the Glass Database and is chosen for selection, may have a set of properties which do not match an entry in Revit. This may happen if you create a name for an imported glass which has already been used. Each entry will have it’s on unique ID however.
This may occur where there are several entries in Revit for Glazing Types which have the same name eg. ¼” Double Glazing. Revit’s internal list may contain an entry with one set of properties, a second entry with another set of properties and a skylight entry with a different set of properties.
Revit invariably will use the last entry that appears in the list sequence which may be the skylight version. An entry chosen in the Glass Database which appears to have the same name, therefore may not map to the correct Revit entry as expected since there are multiple entries with the same name.
Users are therefore advised to check the thermal properties in Edit Type to confirm that the entry has mapped correctly and that these are the properties that they intend to assign. This may be resolved by avoiding using existing names when importing a new glass type. The name in the Constructions.xml file may also be edited to avoid duplicate names but this is an advanced process and should only be attempted by a competent person. Editing the file incorrectly may cause errors and prevent the file from being read so caution is advised. Only users with expertise in writing syntax and coding should attempt modifying this file.