GLD ETF in Roth IRA TD Amer Import worked. 1099b, turbotax says I need: Date aquire, Cost or other basis, Type of gain/loss. Docs has (-) for them. Can I ignore?

TD ameritrade import went ok.  Imported info on GLD ETF, several entries for each month I believe.  Turbotax says I need extra info for these items.  Import didn't import them.  The paper 1099b from Ameritrade has dashes for these items.  If these are for a Roth IRA, do I need to find out and fill in missing info?  Imported box 1a, 1c, 1d, box x.  Says I need 1b date acquired, 1e cost or other basis, box 2 type of gain or loss.  Can I safely ignore this?  This IS NOT a sale of ETF.  I have been holding the ETF.  How do you handle the Principle Payment, which is effectively a return of principle or reduction of cost basis and not a sale as Turbo Tax wants to record it?