If you rolled back all of the same shares, the dollar amount rolled over is the same as the value on the date of distribution, not the value on the date of the rollover.
I'm concerned about your statement saying that you rolled over "like property." Generally speaking, the shares rolled over must be the exact same shares that were distributed from the IRA. You are not permitted to sell the distributed shares, repurchase the shares and then roll over the repurchased shares. Upon distribution the shares acquired a cost basis of the share value on the date of the distribution from the IRAs, so the shares that were returned must be the ones with that same cost basis. If you had other shares of the same type in the non-retirement brokerage account, you'll need to make sure that the ones with the correct cost basis (the exact same shares) were the ones that were rolled over so that the cost basis of the shares that remain in the brokerage account is correct.
With all of the distributed shares rolled over, nothing regarding these shares is to appear on Form 8606.
