Question: Will existing arrangements for specified work stay in place for the purpose of applying for a second WHM visa?

Answer passage (source: Australia):
page_title: Frequently Asked Questions
section_headers: Temporary visa measures supporting the agriculture sector
Working Holiday Maker visa holders
I had to leave Australia and I couldn’t complete my specified work due to COVID-19. My visa is likely to cease before I can come back to Australia, can the validity be extended?
section_content: It is not possible to extend your WHM visa. If you wish to return to Australia
in the future, you will need to apply and meet the requirements for an
appropriate visa. Depending on your circumstances, you may not meet the
requirements for another WHM visa.

Reviewer feedback on this answer:
The user asked about the requirements for applying for a second WHM visa, knowing they will need to do that, while this answer tells them they need to apply for a second. It's redundant.
This answer is not direct.  It might be useful, but there could be more information provided.

Reviewer ratings:
Bad
Could be Improved

Answer passage (source: Australia):
page_title: Frequently Asked Questions
section_headers: Temporary visa measures supporting the agriculture sector
Working Holiday Maker visa holders
I have applied for my second or third WHM visa. Can I keep working while I am waiting for a decision on my application?
section_content: While your new application is being processed, a bridging visa will come into
effect which generally carries the same conditions as your previous visa,
including in relation to work rights. You and your employer can check Visa
Entitlement Verification Online (VEVO) at any time to confirm your work
rights.

Reviewer feedback on this answer:
The question isn't answered directly, but there is a little information on a bridging visa.  That seems to be relevant.
This talks about people who have filled out an application and are using a bridging visa.

Reviewer ratings:
Acceptable
Bad

Answer passage (source: Australia):
page_title: Frequently Asked Questions
section_headers: Working holiday makers
Can I extend my current visa to stay in Australia if I am unable to return to my home country?
section_content: You can apply for a further WHM visa if you have undertaken specified work for
three months on your first WHM visa or six months on your second WHM visa.
The following industries and areas are approved as specified work for subclass
417 (Working Holiday) visa holders:

plant and animal cultivation in regional Australia
fishing and pearling in regional Australia
tree farming and felling in regional Australia
mining in regional Australia
construction in regional Australia and
bushfire recovery work in declared bushfire affected areas only, carried out after 31 July 2019.

The following industries and areas are approved as specified work for subclass
462 (Work and Holiday) visa holders:

plant and animal cultivation in northern Australia and other specified areas of regional Australia
fishing and pearling in northern Australia only
tree farming and felling in northern Australia only
tourism and hospitality in northern Australia only
construction in northern Australia and other specified areas of regional Australia and
bushfire recovery work in declared bushfire affected areas only, carried out after 31 July 2019.

You must apply for a new visa before your current visa expires. You may be
eligible to be granted a bridging visa that will keep you lawful until a
decision is made on your visa application.
If you are granted a Temporary Activity (subclass 408) Australian Government
Endorsed Event (AGEE) stream visa, work undertaken on this visa does not
count as specified work for the purpose of applying for a second or third WHM
visa.

Reviewer feedback on this answer:
The user must work through other information about what businesses qualify, but it does answer the question of whether existing arrangements stand.
There is a lot of information about visas here.  I think that whoever is asking this question would appreciate an answer like this.

Reviewer ratings:
Acceptable
Excellent