Jay, the problem is, IQFeed datafeed does not include seconds on the timestamp that is sent with the quotes. Because of that, QT has to use system time (time when the quote came in) for the quote time instead. If you get a quote just prior to market open, it will contain the previous day's quote, but will show on the current day.
In the next version of IQFeed client (major version, not minor fix update), they will have seconds in the quote time stamp, thus eliminating this issue. For now, not sure what you can do other than manually removing the offending quote (in raw data window)