P: Generative Remove Feedback (Lr Classic & Lr Eco)

@fernando26737625pl84: "The removal works fine but after some time it disappears."

See my previous reply: https://community.adobe.com/t5/lightroom-classic-discussions/p-generative-remove-feedback-lr-classic-amp-lr-eco/m-p/15393963#M407921

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@Thomas Bertini, the orange-circle icon in your screenshot:

indicates that LR can't write the <catalog>.lrcat-data file for some reason, either because LR has corrupted it or there is a permissions issue. LR stores computed AI settings in that file. Try these steps:

1. Do the menu command Help > System Info. If you're not on the latest version (currently 14.3.1), do Help > Updates.

2. In LR, do Edit > Catalog Settings > General > Show. That will open Windows File Explorer / Mac Finder on the current catalog folder.

3. Exit LR.

4. Move the file <catalog>.lrcat-data to the Desktop.

5. Start LR.

6. In Library Grid view (not Loupe view), select all photos and do Photo > Develop Settings > Update AI Settings. That will recompute all the AI masks, which could take a while. 

Recently, however, these steps haven't worked for many people.  If they don't work for you, I recommend starting a new thread rather than continuing the discussion in this very crowded thread.

@Torrey G: "Is there a way to view and select previous AI generations after regenerating multiple times - similar to Photoshop?"

LR doesn't have that feature like in Photoshop. However, when you're looking at more than the first 3 variations and see one that you think is plausible, make a snapshot by clicking the + button in the Snapshots panel. Then you can later review all the saved snasphots very quickly. I use this fairly often.

"will this issue be addressed in future updates?"

Unfortunately, Adobe rarely discloses their plans. There have been a few requests for such a feature in this thread (where Adobe wants Generative AI Remove feedback), but it's hard to tell precisely how many because there are so many unrelated posts here.

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@kovacs29009990eryo: "Can we make a shortkey to turn on and off the  "USE Generative AI" ?

The shortcut is Opt / Alt Shift G. You can see all the Remove shortcuts by clicking the miniscule "?" button in the upper-right corner of the Remove panel:

@_jdj_: "Here I have removed an area to the right and it is clearly not as "crisp" as the left part."

Many have observed here that the replacements made by Generative Remove sometimes don't match the photo's tone or noise. To get better matches, these techniques sometimes help:

1. Adobe recommends applying Denoise before Remove. This can reduce the noise, making it more likely the replacement will match.

2. The replacement patch supplied by Adobe Firefly has a maximum size of 2048 x 2048 pixels. If the selected area in the photo is larger than that, then the replacement patch gets upscaled (and blurry). Try removing smaller selections if possible.

3. Conversely, try making a larger selection, even including the entire background. Upscaling of the replacement sometimes won't be noticeable then.

4. Sometimes there's a distinctly visible boundary where the tone or noise don't match. You can often use the heal tool around the boundary to get better feathering and make it less noticeable -- apply Heal in small brush strokes. Or use a Brush mask with maximum feathering, dropping local Texture, Clarity, and Sharpness to their minimum values. Sometimes, making a very raggedy selection around the object makes the boundary less noticeable.

5. For grain/noise in particular, see this post for how to ameliorate the problem by adding the grain back or reducing the grain:
https://community.adobe.com/t5/lightroom-classic-discussions/p-generative-remove-feedback-lr-classic-amp-lr-eco/m-p/14917497#M382464

@Martha33169128qobw: "I tried to get rid of a pedestrian at the edge of my frame and have been offered a new person, an ad board, a huge concrete planter, a few car bumpers, and now........ a polar bear!"

 Note that the other people and objects are casting shadows on the wet pavement. When you select an object but not its shadow, Remove will generate another object that casts that shadow. (Otherwise, it could often look strange having a ghost shadow or reflection.)

In the first screenshot, I've selected just the polar bar, which gets replaced by a scooter. In the second screenshot, I've selected the shadow below the bear too:

See this short article for how to remove objects more reliably:
https://www.lightroomqueen.com/generative-remove-replace/

Most complaints about Remove are addressed in the article. But if it doesn't help, please attach a full-resolution JPEG exported from the unmodified original photo (not a screenshot). With nearly every one of the many dozen problem photos posted here, we've been able to show how to quickly remove the desired objects.