x2ipi supports some sorting procedures (Menu-Save-Sorting). I think than we will have optimal results if we do not mix measurement with different AB lengths (Menu-Save-Sorting-AB length).
Some examples of sequences after sorting.
Schlumberger array
Dipole-dipole array
Dipole-dipole array after cables roll-along. Reverse dipole-dipole array will be faster for multichannel receivers.
 Pole-dipole array - forward and reverse