You will have to do the 1065 return from scratch and enter the rentals again. You can't transfer from your schedule C to the separate Business program. You will need to close the business in your personal return.
You need to buy Turbo Tax Business, not to be confused with the personal Home & Business version. Home & Business is just for personal returns that need schedule C for self employment. You can have the Business program and a personal program installed at the same time.
You can buy the stand alone do it yourself Business Download program for Windows here (it is not available to do online or for Mac).
https://turbotax.intuit.com/small-business-taxes/cd-download
