Because you have been issued a new passport, your previous passport is no longer valid. When your consulate issues you a new passport, they should do something to the old passport to indicate this:
keep it and not return it to you
clip a corner of the cover
punch holes in it
stamp it as "invalid" somewhere
give you a "cancelled" sticker ...
Airlines use the TIMATIC database. Regarding Switzerland, the information comes from the SEM, but ironically SEM letters are not listed as an exemption. All it says is Swiss Schengen visas issued after 16 March can be used.
If the visa is issued before 16 March, you need to e-mail firstname.lastname@example.org (CC: email@example.com), attach the flight ...
The US embassy in Poland states exactly who can enter Poland (emphasis mine):
Only the following categories of travelers will be allowed to enter:
Citizens and residents of European Union countries who are transiting Poland en route to their place of residence or stay
Spouses and children of EU citizens and residents who are transiting ...
A National D-Visa is not a residence permit
it allows for a visit longer that 3 months
A residence permit is treated as D-Visa insofar that it allows the holder to travel to other Schengen countries using the 90/180 rule.
Consulates generally do not issue residence permits.
A Consulate will issue a D-Visa based on their national laws
often also to take up ...
will we be prevented from traveling by car by border force?
Unlikely - if nothing else UK Border Force don't really give a rat's posterior, assuming they wouldn't be interesting in detaining you for any of the usual reasons (y'know guns, drugs, being terrorists - that sort of thing), whether you're allowed into France is the more pertinent question and as ...