AU Visitor visa (subclass 600) Business Visitor stream: National ID card and other passports/documents for travel

I am a citizen of the Russian Federation. Currently, I work and have my family in Germany (permanent residency). In order to apply for a Visitor visa (subclass 600) Business Visitor stream, I should provide

• a national identity card
• the information on other passports/documents for travel.

(1) According to Wiki,

a national identity document is defined as an identity card with photo, usable as an identity card at least inside the country, and which is issued by an official authority.

From my understanding, the permanent residence permit fulfills these requirements and is a national identity card (my citizenship is clearly stated there). In Russia, we have an internal passport that is not a card.

Am I right in understanding that as a national identity card I should provide my German permanent residence permit only?

(2) Other passports or documents for travel include:

any expired passports or documents for travel where the details are known.

In the online application, I am asked to

Give details of any other non United Nations passports or documents for travel that might have been previously used to travel to Australia.

I have never been to Australia and never applied for an AU visa previously. However, in my understanding, my previous expired passport might have been used for an AU visa application - in theory (however, has not been). Should I provide information about my expired passport?

Many thanks.