Should I show the distribution of $6000 in 2016 tax return if we already paid taxes on it in 2015?

In 2015 Grantor trust (6 grantors) received distribution $7000 and Schedule K-1 from another complex trust where the 6 grantor's are beneficiaries. The Grantor trust filed 2015 tax return showed the distribution of $7000 in Grantors letters ($1,166 to each grantor).But the actual distribution was made in 2016 and only $1000 to each grantor.
Should we show the distribution of $6000 in 2016 tax return if we already paid taxes on it in 2015 ?