I have names in Col(A) and data in col(B:R). No duplicates in Col(A).
Col(B) are dates
Col(E:K) have data from 2017
Col(L:R) have data from 2016
I import new data (for 2017) to Col(Z:AG)
After processing new data, it's transfered to Col(A:K), last row + 1
Now I have many duplicates in Col(A) and...