I'm changing raster layers in ArcMap from WGS84 to BTM (Bangladesh Transverse Mercator). I first set my data frame to be in BTM
[BTM Projection: Transverse_Mercator False_Easting: 500000.0 False_Northing: -2000000000.0 Central_Meridian: 90.0 Scale_Factor: 0.9996 Latitude_Of_Origin: 0.0 Linear Unit: Meter (1.0)]
When I add the layers I'm asked to do a datum transformation apparently. I found two transformation datum which differ in ΔZ. Which one is accurate?
First one: ΔX -283.729m ΔY -735.942m ΔZ -261.143m
Second: ΔX -283.729m ΔY -735.942m ΔZ -161.143m