It is nice that Abaqus allows users to create a node if you know the coordinates. However, you cannot copy the coordinates of the nodes from another program to Abaqus. Users have to type in the coordinates. This is kind of too slow. Abaqus should allow users to import coordinates of many nodes at the same time, although you can do it with a Python script like this: 

b = mdb.models['model-1'].parts['PART-1']

d1 = b.datums

b.Node(localCsys=d1[45], coordinates=(4.1765254, 0.4240334, 4.34543))