Single Dish imaging bug for EBs with different antenna positions in common antenna names and IDs

A bug was found for imaging of single-dish data with the tasks sdimaging and tsdimaging
in CASA versions 5.6 and lower. This bug could cause an inaccurate direction conversion when more than one MS is given and these data contain the same antenna with the same antenna ID but with different location, i.e., station or pad where the antenna is placed. The bug affects the brightness distribution and flux density in the combined image, since the coordinates are not correct for some fraction of the data set.

Details of this bug can be found in this Knowledgebase Article.

The bug was fixed in CASA 5.7/6.1