Form 1099 B

I have a 1099-B form labeled "Proceeds from Broker and Barter Exchange Transactions Box OMB No. 1545-0715" from Morgan Stanley Capital Management. It has been reported to the IRS and is related to a savings account that my wife and I opened last year. I have entries in Box 1d and Box 1e of the 1099-B. The amount in Box 1d is about $50 less than the amount in Box 1e. I haven't had to use a 1099-B before and have no idea if these represent short or long term investments. I picked short term. Does this matter?