One thing I found from our openclinica2.0.1 seems strange. That is two records are generated in table event_crf when add a new study event to a new or existing subject, click button of Proceed to Enter Data to show CRFs in this study event, then click Action to Enter data. I test it several times, it always added two records to table event_crf. Is there anything to be setup to avoid it or what cause it and how to solve it? The data input to item_data by this action will pick up one event_crf_id always to link the item data with it, the another event_crf_id has not any data linked to it as I know so far. If you have any idea to explain and solve this problem, please let me know. All your help are appreciated.