Southwest airline gates virtually empty

[Dashhutch01]

Recently I have noticed that the E Concourse gates at KPHL are empty of AI Southwest airline planes. I have plenty of SWA ai flight plans in the sim. The SWA planes appear fine at all other airports. Even with the traffic slider maxed out to 100% I only see one or two SWA planes at Philly at any given time. Can someone give me a clue as to a possible solution to this? Thank you very much for your attention to this matter.

[Dashhutch01]

I think I found the issue. I use Traffic Tools. My traffic file got corrupted somehow. I removed it and ran Traffic Tools compiler again. This created a new traffic file. I started up FS9 and behold, there were 7 Southwest planes at the gates. Problem solved.