Hello,
Any additional changes in Excel can not be imported into AC because these changes can not be organized within the model
You must :
- create an element nomenclature from AC with one or more properties to inquire
- export the file xls from the menu File / interoperability / classification and properties
- modify only the column or columns previously created by AC
- save the xls file
- import the xls file into AC from the menu File / interoperability / classification and properties
Christophe - FRANCEArchicad Designer and Teacher
Archicad 15 to 27 FRA FULL
OS 11.6 Big Sur - MacBook Pro 2017 - 16Go RAM
"Quality is never an accident ; it's always the result of an intelligent effort" John Ruskin