While watching ep. 9 of Brotherhood, I noticed that when Winry came to Central City railway station and started looking for someone, Izumi and her husband were walking behind her:
Picture from FMA brotherhood.
After that I tried for this scene in the 2003 series, and in ep. 23 I have found this scene where they were reading something at the Central railway station:
Picture from Anime FMA 2003
So my question is: what might Izumi and her husband be doing there? Do they usually travel like this, or might there be any sort of work they had to do there? Is it also possible that it is an error (like they didn't want to put those characters there)?