martinez,
I would suggest using the 'alt+D' [distance between nodes] tool for confirming the dimensions between final 2 nodes for closing the loop. It is also available by pull down menu 'Edit' + 'Distance'.
When revising node numbers in a model, remember that some node numbers might not be updated, like the bend midpoint /end node numbers. Also, the node numbers of the hanger definition, restraint definition, displacement definition, etc. might not get revised when element node numbers revised.
Also verify that the node numbering does connect the elements in sequence. If the sequence is interrupted without establishing another node to connect within the previous sequence, then the separate node sequence is then placed back to the origin. (This would show in the graphics.)
_________________________
R Yee