"@" in flight plans

Some of the flight plans I've downloaded have "@" for the arrival times, I do not like using the a set arrival time, I'd rather TTools calculate the arrival time. My question is can you remove the "@" from the flight plan?
It is a weekly flight plan if that makes a difference.
Thank-you Lee Swordy for TTools & AFCAD, I use them daily....................
It is a weekly flight plan if that makes a difference.
Thank-you Lee Swordy for TTools & AFCAD, I use them daily....................