Yes and No. Normally, the answer is no. Once a form is finished, the datapaths are executed and the data is no longer available in the Mi-Forms Client. The Mi-Forms Client is intended to be the data capture segment of the form workflow.
If the workflow dictates that a form needs to be opened in Mi-Forms after it is finished, the forms designer can utilize a Mi-Forms Session export. This will create a file containing the collected form data which can be opened in the Mi-Forms Client. See the Session File topic for more information.