Depending on your facility, local sort/load times may not be approved due to the facility type. In this case, they would simply be removed.
Your leave and return to building times should not be altered, providing you entered them and they are valid. If you did not enter them (read: you failed to punch out), or the times you entered are invalid (e.g. before punch in, before start time, after punch out, etc.) then expect your leave/return times to reflect a decent guess as to what they should have been.
You cannot be disciplined for having less than 8 hours of work. You can be disciplined for working during times you recorded as a break, or for unsafe work methods that may have contributed to you being under 8 hours.