CDU route behaviour

[Jackpilot]

I found out by fluke that when I get a bag of noodles instead of a sensible magenta route along my waypoints, everything gets corrected when I enter a flight number and push Exec.. ???!!!!????

[Bob Reed]

How about if you push EXE without a route number?

[Jackpilot]

The bag of noodles stays.
(Magenta curves twisting sensless around waypoints with returns to origin)

[Bob Reed]

My CDU adds a company name/number thing when I activate the rout...