Ok i know where is a problem. File path for detached model didn’t have file name. Now it works.
try:
models_folder_detached = models_folder_detached.replace("\\","\\\\")
for revit_model in models_paths:
try:
print(revit_model)
revit_model_path = ModelPathUtils.ConvertUserVisiblePathToModelPath(revit_model)
doc_det = __revit__.Application.OpenDocumentFile(revit_model_path, open_options)
models_folder_detached_name = models_folder_detached+"\\"+str(doc_det.Title)+".rvt"
print(models_folder_detached_name)
doc_det.SaveAs(models_folder_detached_name, save_as_options)
doc_det.Close(False)
except Exception as e:
print(e)
except Exception as e:
print(e)