OK, I'll trot out my explanation again
Imagine you're in Los Angeles. The channels you need to dial up, if we didn't do channel remapping:
| Station | Channel, analog | Channel, transitional digital | Channel, permanent digital |
| CBS (KCBS) | 2 | 60 | 43 |
| NBC (KNBC) | 4 | 36 | 36 |
| CW (KTLA) | 5 | 31 | 31 |
| ABC (KABC) | 7 | 53 | 7 |
| KCAL | 9 | 43 | 9 |
| Fox (KTTV) | 11 | 65 | 11 |
| My (KCOP) | 13 | 66 | 13 |
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Now, the same table given virtual channels:
| Station | Channel, analog | Channel, transitional digital | Channel, permanent digital |
| CBS (KCBS) | 2 | 2 | 2 |
| NBC (KNBC) | 4 | 4 | 4 |
| CW (KTLA) | 5 | 5 | 5 |
| ABC (KABC) | 7 | 7 | 7 |
| KCAL | 9 | 9 | 9 |
| Fox (KTTV) | 11 | 11 | 11 |
| My (KCOP) | 13 | 13 | 13 |
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Looking at KCBS.. to watch it in analog before transition, you punch in channel 2. To watch it in digital during transition, you punch in channel 60 -- unless you have cable or satellite in which case it's still channel 2. But at the end of analog, channel 60 stops working ("No Signal"), to watch KCBS you have to punch in channel 43 instead. But again, if you have cable or satellite it's still channel 2.
Now, let's say you want KCAL.. To watch it in analog before transition, you punch in channel 9. To watch it in digital during transition, you punch in channel 43 -- unless you have cable or satellite in which case it's still channel 9. But at the end of analog, if you're still watching channel 43 now you get KCBS, not KCAL. To get KCAL you have to go back to channel 9.
What's less confusing?