I have a fund in my 403b (Fidelity) that will be changing in September from Investor Class to Institutional. I understand the differences, generally, between the classes and Fidelity's statement says the only material change will be in the expenses being lowered: "...the share class of one investment option offered through the ------ Retirement Plan will change from Investor Class to Institutional Class shares. As a result of this change, the Fund Code, Ticker Symbol, Expense Ratio, and Expense Information will change. The new share class will offer you the same investment strategy and risk but the overall expenses will be lower." The expense ratio is lowering from 0.1 to 0.05. Is there anything else I should be aware of/concerned about?