I had sfo-lax-iah-iad-ewr-bog, and I thought i could just tack on a colombia segment, and still have my 5 domestic segments, but now it will only give me 3

edit: Actually, as best as I can tell, you can still have all the segments, but you can't stay overnight in BOG. So this works, but only because there is no overnight. if you try and take a next day morning flight on the outbound or a previous night flight on the return, it wrecks it...anyone know why? I would prefer my destination to be pereira PEI.
$806.00
San Francisco (SFO) to Los Angeles (LAX) - Thu, Jul 4
United 1472 Dep: 7:15PM Arr: 8:52PM 1h 37m Boeing 737 First (P)
Los Angeles (LAX) to Houston (IAH) - Fri, Jul 5
United 693 Dep: 1:14AM Arr: 6:26AM 3h 12m Boeing 757 First (P)
Houston (IAH) to Washington (IAD) - Fri, Jul 5
United 321 Dep: 7:30AM Arr: 11:34AM 3h 4m Airbus A320 First (P)
Washington (IAD) to Newark (EWR) - Fri, Jul 5
United 4900 Dep: 12:25PM Arr: 1:59PM 1h 34m De Havilland Dash-8 First (P)
Newark (EWR) to Bogota (BOG) - Fri, Jul 5
United 1068 Dep: 4:34PM Arr: 9:34PM 6h 0m Boeing 737 Business (P)
Bogota (BOG) to Medellin (MDE) - Fri, Jul 5
Avianca 8432 Dep: 11:14PM Arr: 12:10AM 0h 56m Airbus A320 Business (D)

Cali (CLO) to Bogota (BOG) - Tue, Jul 9
Avianca 9200 Dep: 5:50AM Arr: 6:47AM 0h 57m Airbus A320 Business (D)
Bogota (BOG) to Newark (EWR) - Tue, Jul 9
United 1069 Dep: 8:48AM Arr: 3:58PM 6h 10m Boeing 737 Business (P)
Newark (EWR) to Chicago (ORD) - Tue, Jul 9
United 3489 Dep: 8:00PM Arr: 9:40PM 2h 40m Embraer RJ-170 First (P)
Chicago (ORD) to Houston (IAH) - Tue, Jul 9
United 1112 Dep: 10:15PM Arr: 12:51AM 2h 36m Boeing 737 First (P)
Houston (IAH) to Los Angeles (LAX) - Wed, Jul 10
United 70 Dep: 6:05AM Arr: 7:29AM 3h 24m Boeing 787 First (P)
Los Angeles (LAX) to San Francisco (SFO) - Wed, Jul 10
United 788 Dep: 8:33AM Arr: 10:10AM 1h 37m Boeing 757 First (P)