It depends, if it were a sticker in this exact shape it wouldn't matter but if it's ether curved or has connecting stuff it could hurt things like normal generation.
And in the case of the triangle quad combination (#3 in the example) seams are almost guaranteed resulting from the rounding differences between the coordinates in the .dat and the ones resulting from the graphic cards rasterization calculations.
And in the case of the triangle quad combination (#3 in the example) seams are almost guaranteed resulting from the rounding differences between the coordinates in the .dat and the ones resulting from the graphic cards rasterization calculations.