{
:local lists {"Port-Scanners"}
:local export "port-scanners"
:local file "/ip firewall address-list\n"
:foreach i in=$lists do={
:set $file ($file . "remove [find list=\"" . $i . "\"]\n")
:foreach j in=[/ip firewall address-list print as-value where list=$i] do={
:set $file ($file . "add list=\"" . ($j->"list") . "\" address=\"" . ($j->"address") . "\"\n")
}
}
:if ([/file print count-only where name=$export] = 0) do={
/file print file=$export
:delay 2
/file set $export contents=$file
}
}

файл сразу готов для импорта командой

/import port-scanners.txt