config A
	bool "A"
	help
	  This is a new symbol.

choice
	prompt "Choice ?"
	depends on A
	help
	  "depends on A" has been newly added.

config CHOICE_B
	bool "Choice B"

config CHOICE_C
	bool "Choice C"
	help
	  This is a new symbol, so should be asked.

endchoice

choice
	prompt "Choice2 ?"

config CHOICE_D
	bool "Choice D"

config CHOICE_E
	bool "Choice E"

config CHOICE_F
	bool "Choice F"
	depends on A
	help
	  This is a new symbol, so should be asked.

endchoice