Quiet,
No, but the NFRTR has to be changed and it is not a good idea to fail to notify BATFE of the change of address (intrastate or interstate) and have them find out later. And why not? Encoreman will have a registered suppressor, so it is not like he is trying to conceal anything or run away from the law.
TurtlePhish,
The form itself says it applies only as Quiet says, and specifically does NOT mention suppressors.
FWIW, the Form 4 transfer approval includes authorization to transport/ship intrastate or interstate.
Jim