For intersector Cable swap i.e sector swap you can ID by HO attempts to neighbours in another sector would be stronger and if neighbours are defined as planned (not as implemented) the HSR might be a bit low for the two sectors.
Also can confirm from DT Plot( would show coverage in wrong direction). For single cable swap there might be assignement failures on the cell and the TRX UL levels would be severely low as compared to DL levels. ( If you have a stat like UL Drops then it would be high) this would identify that UL path is swapped)- cannot be varified in field.
For the DL path it can be varified in field. disable hopping and check for all TRXs the levels near site it might be a partial swap where only DCS is swapped or only the GSM is swapped.