Antonovanimation While this is technically possible, please note that it is probably not as easy as you might imagine.
The "bake" feature in other software temporarily saves the results of physical calculations for the entire timeline and applies them as keys, but the Key Constrained hotkey can only be used to save the specific pose of a frame. The motion obtained by physics constraints results in smooth curves, but when you save the pose using the Key Constrained hotkey, the curves cannot be reproduced, and the calculation results for the subsequent poses will be offset by the change in the previous pose, so you will not be able to get exactly the same animation.
Therefore, this hotkey is useful if you want to save at least a general pose after creating a motion with physics constraints, in case you have no choice but to delete the physics constraints. However, if you want to reproduce the motion achieved by physics constraints in a lower version, you will have to make many manual modifications, which will be quite time-consuming.
The Spine 4.3 beta has begun!
Hello! I'm using the Slider function,
Can't mesh keys be applied to each other?
wane1954 If you are referring to the deform key for the mesh attachment, we apologize, but there is currently a bug in the available version that prevents it from working with sliders. This issue has been fixed in the unreleased 4.3.19-beta version, which we plan to release soon. We appreciate your patience.
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4.3.19-beta is now available! See the changelog for details. This is a big update with a lot of great fixes and improvements. There are a few more features we are working on for 4.3, such as more integrated PSD support, then we will switch to stability so we can release 4.3 as non-beta.
In the meantime runtime porting is underway! spine-unity is likely to be completed first, with spine-ts and others coming soon after.
We've also just released spine-webcomponents, which makes using Spine in web pages a lot more powerful. It's available for 4.2 if you want to take an early look:
EsotericSoftware/spine-runtimestree/4.2/spine-ts/spine-webcomponents
You can see an extensive demo page here:
https://esotericsoftware.com/files/spine-widget/tutorial.html
Hey Nate. These new updates really good and really improves on our rigs and animations so far. Have a rough idea when we can expect the full release?
We plan to switch our current pipeline to full 4.3 but between betas we time to time encounter slight bugs and don't want to encounter with possible compatibility issues. We created a test in one of the newer betas last week but there were an UI bug so we tried to downgrade but didn't go too smooth.
Can't say for sure. Sometimes surprises happen. We're doing some bug fixes now, so stability will improve, but there will still be a few new features and that can break things. I don't suggest using the beta for production unless your release is quite far out.
I would be happy to have 4.3 non-beta in 1.5 months. 3 months might be more realistic. Sorry we can't promise it!
Yes, we try very hard so that beta project files can be opened by later versions. In over a decade we've never failed at that, though it's technically possible. 
Oh wow the sliders will be insanely useful. I have been wanting to be able to export 'layered' animations to video for a long time now and this essentially enables that. I also see that you already had the "graphically showing clamp limits" solution too! Gonna have to jump back into spine and try figure out sliders.
In 4.3.30-beta we've added PSDs to the Images node. This lets you easily recreate your PNGs and attachments from one or more PSDs. It's a better workflow that using the Import PSD dialog, since it remembers each PSD and the settings per PSD file.
4.3 should now be feature complete! That means we'll focus on bugs, stability, and the runtimes until it's ready to be released as non-beta.
Thanks to everyone who is testing the beta and reporting any issues you encounter!
Sliders are a really cool feature!
But this might be my greed,
It would be nice if we could mix several sliders properly.
Currently, the idea is that only left and right rotations can be used, and it seems difficult to express the up and down rotations together.
@wane1954 Sliders set a pose, overwriting (or blending with using mix) the previous pose value, the same as applying an animation does. If you want to combine multiple sliders that key the same values, check Additive.
Please note that the recommendation to avoid deform keys still applies. In rare cases they are needed but most of the time it is better to use bone weights to manipulate a mesh. You can still key the bones in a slider animation.
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Nate
hey there , quick question
We're currently thinking of porting from unity 2022, to latest 6
Would you recomend 4.3 beta or 4.2? Asking since 4.2 has version range as Unity 2017.1-6000.0
and we're looking at latest stable so 6000.1.5f1 for now , wondering if the range would also include anything in the 6000 range unoficially or is 6000.0 a hard stop? Or if we use the LTS if the 4.2 is safe