XS_IMPORT_MODEL_LOG
Category in Advanced options dialog: Import
Set this advanced option to TRUE (default) to create a
new log every time you import a model.
To append a log entry to the previous log, set it to APPEND.
This advanced option is user specific and the setting is saved in options.bin under the user folder, for example, in C:\Users\<user>\AppData\Local\Trimble\Tekla Structures\<version>\UserSettings. Restart Tekla Structures to activate the new value.