They did indeed, but I'm pretty sure they weren't using the opposing team's ticket office facilities to do it, and were organising the collections from a different location (I think they might've even built a pop up kiosk for one game though I'm not sure), similar to what City did for those European games before it was scrapped due to the shenanigans at Celtic when they were warned that it wouldn't be like your average European away as most fans would be dropping on the destination in a smaller time window, meaning they'd need extra staff to cope.
I called this at the start of the season - that if City were expecting the opposing club to open up their TO facilities for this then they might get a bit of a shock as those clubs have their own fans to deal with, and therefore hardly need a bunch of away fans increasing the burden.