The following buttons may be available at the top of a Reduced-Order Model’s Settings window (or right-click the reduced-order model node and choose them from the Reduced Model context submenu):

Click Update Reduced Model Data () (or press F5) to update the reduced model data to take the current model state into account. This step is similar, but not equivalent, to recomputing the Model Reduction study that created the reduced-order model. More precisely, updating the reduced-model data does the following: First, it performs the equivalent of a solution update on the reduced-model data (see Updating a Solution). Second, it causes linear outputs from a modal reduced-order model to be computed in the same way as nonlinear outputs (that is, via reconstruction of the full solution), which is less computationally efficient. Note that updating the reduced-model data does not retrain the reduced-order model and can therefore lead to an inconsistent model. Recomputing the Model Reduction study avoids these potential disadvantages.

Choose Export Reduced Model () to export the reduced-order model to a COMSOL Reduced Model file (*.mphrom) that you specify in the Export dialog box.

Click Reset to Default () to reset the reduced model properties to the default values (that is, the last values produced from a Model Reduction node or imported). Clicking this button is useful if you have made edits for the settings that you do not want to keep. When updating the reduced model using the new settings, the updated values become the ones used as the original values for the reset.