When I established my private strip, Foreflight and WeatherMeister both continued to show it in the old location (there used to be another airport with the same identifier, it was closed) for a couple of map data cycles. I had to call both of them and point out the error to get it corrected. SkyVector got it correct right away.
It appears, and I say "appears" because I don't have any inside knowledge, that at least these two programs/apps were not updating the database that contains all the airport identifying information (lat/long, runways, elevation etc) when they updated the sectional. In both cases I could see my airport in the correct spot on the sectional, but if I tried to do a flightplan it would choose the old incorrect location.