A business that is classified as a qualified business at the time of the first investment in the business by a venture firm, the Enterprise Fund, or the Financing Authority remains classified as a qualified business and may receive follow–on investments from a venture firm, the Enterprise Fund, or the Financing Authority as provided under this subsection. A follow–on investment from a venture firm is a qualified investment even though the business does not meet the definition of a qualified business at the time of the follow–on investment. With respect to an investment by the Enterprise Fund or the Financing Authority, a follow–on investment does not qualify as a qualified investment if, at the time of the follow–on investment, the business no longer meets the definition of a qualified business. Each venture firm shall inform the Corporation in writing when the venture firm requires designated capital for investment or for the payment of approved fees and expenses.