It reads other extended properties. It just doesn't write them. You'd have to do that manually with T-SQL.

Just delete the blank row after inserting.

Jason has a good explanation, but a couple other points.
1. Enable IFI for your server to let data files grow quickly
2. Set some monitoring up to look...

It should. You're creating a record in DNS that has the port value in there.

Is your database < 50MB? Then sure. Otherwise, no.

Ah, in SQL Doc, I can't edit Extended Properties. That seems strange, so I'll pose the question to the team, but I suspect that we just read what's there. The...

Yes

It's not necessarily about extrapolation in the sense of predicting the future. That happens, but outside of guessing where large groups of items might land (sales, locations, etc.) it's not...

I believe all of our documentation is stored in extended properties. There is more information here: https://documentation.red-gate.com/sdoc3/generating-and-viewing-documentation/what-s-in-the-documentation

I added a few XProps, and got this

Disclosure: I...

I'd think here that the other server is having issues validating the domain account. It might have lost the connection with the domain controller it uses. Could be time is...

No images expire. There isn't an expiration date for any key. The only issue would be in an audit where someone might compare the key used to your agreement.

If you need the SQLServer module: https://docs.microsoft.com/en-us/sql/powershell/download-sql-server-ps-module?view=sql-server-2017

Are the secondaries read only?