Lightroom Classic CC 7.3: default settings only partially applied on import

I have set my defaults in the Develop module, using the Develop menu, "Set default settings..." menu entry.

Thank you, I am well aware of that, but neither of these preferences settings is activated.

And that doesn't explain the difference between 7.2 (where my default settings are applied as expected) and 7.3 (where they're only partially applied).

The difference between 7.2 and 7.3 is the new profiles and presets format, so...

The two settings are for ISO Setting and Camera Serial Number. Camera model is always active and requires setting your custom Develop Default settings individually using files from each specific camera model and then saving each as separate Default Develop Settings.

Try this:
Open a raw file from one specific camera model, hit Reset, and change the Develop module controls to your custom settings. Next click on the Reset button at the bottom of the Develop panel while holding down the ALT key, and click on 'Update to current settings.' Restart LR and make sure the same file is still selected. Hit the Delete key and select 'Remove' and NOT Delete. Open the Import module and make sure Apply During Import panel shows Develop Settings = None. In the Source panel select the file you just removed and reimport.

Do you see your Default Develop settings now? If not please tell me if you have 'Store presets with this catalog' checked in LR Preferences> Presets and what version of Adobe Camera Raw you have installed. From inside Bridge go to menu Edit> Camera Raw Preferences and copy the Camera Raw Version number showing at the top of the panel.

Again, Todd: it works as expected, and like it ALWAYS did, in v7.2, it doesn't work in v7.3 anymore - where are your questions supposed to lead, other than wasting time?

Also, allow me to repeat what I already wrote above: Only when I use "Reset" on a newly imported photo, ALL of my custom default settings are applied.

They're not applied on import anymore. Coincidentally, the whole profile/preset system was changed in version 7.3...

It sounds like you're not interested in "trouble-shooting" this issue with LR 7.3. That's fine and in fact I've rolled-back to LR 7.2 for similar reasons (corrupt catalog backups, Develop preset issues, etc.).

To roll-back to LR 7.2 open the Creative Cloud app and click the down arrow next to Lightroom Classic CC, select 'Other Versions' and then select 7.2. See if this resolves the Default Develop settings issue.

Sorry, I just noticed you've already rolled back to 7.2. Hopefully this will be fixed in the next update 7.3.1.

Todd, note that the corrupt backups was in 7.2 (everything since 7.0) so you'll want to back up manually for the minute.

There also appears to be a long standing (pre 7.0) issue with the 'Integrity' check when backing up a catalog file on exit from LR. Any catalog corruption detected during the backup process is NOT reported. If you hold down the CTRL or CMD key when launching LR and select the Integrity test it will report any detected catalog corruption. Unfortunately the current catalog "repair" process doesn't "fix" it even when the catalog appears to be working properly. Adobe is working on a solution to both issues, which should be corrected in the next update.

By the way,

i updated to 7.4 right now, and it didn't fix the problem (see above!)
Any suggestions here?

So why don't you update to 7.4 if the host of issues continue in 7.3.1?

Yes definitely, 7.4 fixed mostly all 7.3.x issues for me

Thank you. Will do. Didn't realise a update had been released. Usually automatic, but not this time it seems. Hopefully that will be great. Cheers.

7.4 didn't fix it for me.

Agreed, not fixed by 7.4. This is frustrating and seems so wide spread, dont understand why something isn't done about it by Adobe.

Yes, it would be very nice to see some dedication from adobe to fix this problem. 

It's a very essential function, and as far as i understand it's one of the big strengths of lightroom to automate a lot of recurring tasks, like for example applying settings / profiles on import. 
But that doesn't work reliable at the moment. So please fix that fast, because it costs a lot of time to do all that stuff manually.

We are not stupid, and we did understand the mecanics behind the "default develop settings" and the "profiles"
All that worked fine for us until 7.3. 
We know that "default develop settings" are camera and ISO dependent, of course! That's the reason we use it!
And i need to use a (color correction) profile on import, because it gives me a starting point to my very own look, or the look of the current project.

Please fix this.
thanx