Hi Daniel,
I'm aware of the variety of imagery and the various offsets (back the day, I worked on a system to try to capture local corrections for these) and also of the issues around building "lean". I have been conferring with Anne on the alignment issue for these changes. Your input is useful in terms of the Kilkenny situation, but I'm curious how you find Bing's alignment. In general, I find theirs the most uniformly correct. For this particular set of edits, I chose to leave the alignment as close as possible to where I found them (while separating as required). My intention is to follow up with some local RTK-corrected GPS surveys to capture some known true locations in the area against which imagery layers could be calibrated. In the meantime, the locations of these buildings should be no worse than they were already, and I'm reluctant to invest time in tweaking against an uncertain baseline.

Dermot