When should I create a new filing vs. maintain an existing filing?

A new filing must be created every time a new series of filings relating to a discrete and separate transaction is started. For example, where a pro forma (or renewal) simplified prospectus is filed to renew the offering of investment fund securities for another year, the pro forma simplified prospectus must be filed as the first submission of a new filing rather than as part of the filing from the previous year. On the other hand, an amendment or a supplement to a prospectus must be filed as part of the existing filing using ‘Maintain’.