The right answer here is establishing a personal process or workflow that suits you.

You, like me, and probably everyone who has used a Montage/MODX, have realised that modifying/tweaking Envelopes across multiple elements/operators is a pain in the butt.

Next time, the easy way, is to work on one "key" element (all others switched off or muted) and set all the required envelopes FIRST.

Do Keyboard and Velocity Limits SECOND.

Once you are happy, then copy the element to the other slots.

It is then usually a simple case of setting the Volume, Pan, and Tuning Parameters for the other elements (or even changing the waveform).

There is another "quickish" way to bulk update element parameters...

Use the Part and Element buttons at the bottom of the Screen. It took me a while to "train" myself to use these, but they do help.

For example, lets say you want to tweak and update FEG settings across multiple Elements.

Mute all elements except the one you are tweaking. Make your tweaks and test. When you are happy, DO NOT Exit out to the homescreen. Just touch the next Element you want to update, and the Montage will take you directly to its FEG Screen. You can flip back and forth between the two (or more) elements and the "cursor" will stay on the same Parameter. This allows you to do quick visual comparisons and confirmations.

Lets say you want to change Decay2 Level to value "46" for multiple elements.

You click on the new element button, hit the Top Panel "Enter" button, then type "46", hit Enter again, then move to the next element. Rinse and repeat.

It is certainly easier than having to "pen and paper" the values, or trying to "remember" them.

JM Tools, which I myself do not use, allows for cut/paste more granularly than otherwise available on the instrument itself. So one may elect to purchase these tools to help facilitate copying smaller sets of parameters. There's a little extra overhead with this approach due to involving a computer and transfer/update of information. However, overall it may still be incrementally better.

Thank you all for answering.
My very first conclusion is that this possibility hasn't been planned by the Yamaha Team.

That said, thanks to your posts, I will try what you've suggested.
Thank you.

Thank you all for answering.
My very first conclusion is that this possibility hasn't been planned by the Yamaha Team.

That said, thanks to your posts, I will try what you've suggested.
Thank you.

Correct, the copy/exchange features feel and behave like an afterthought, not sincere consideration of usages.

Hello,

I know we can copy/exchange elements settings by using Shift+Edit.

But is it possible to copy some selected parameters. For example, I have worked on Element 1 Filter with all its associated parameters (cutoff, res, EG, etc...) and I want to copy these Filter parameters on Element 2 but not the other parameters.
How is it possible ?

Copying Performances, Performance Parts, Part Elements is possible on the instrument.

If you wish to copy specific Element parameters, or even deeper, Waveform parameters you will need to get the third party Editor:
John Melas Editor - Link -- Melas Montage Site

Editing Workflow on-board
When you are creating your own instruments on the MONTAGE, you would naturally build your first Element. Each Element is the equivalent of a complete synthesizer engine.
It includes an Oscillator with its own Pitch EG, it includes a Filter with its own Filter EG, it include an Amplifier with its own Amplitude EG. Each Element has its own LFO, its own routing through the Insertion Effect blocks. It is a complete synth engine on its own.

You can Copy it as an entity, then make changes to distinguish it. Because you can COPY the entire Element than switch just the source Waveform you can find a way to make this useful. As pointed out, it doesn't take long to discover this, naturally, when building your own sounds up from scratch. For example, if you were building a piano sound... you would likely set your first Element's Pitch, Filter and Amplitude parameters... then COPY that to each additional Element you are going to define (less the KeyOff Sound Elements). Constructing a piano with multiple Waveforms - the Elements recreating string vibrations would share the same/similar Envelopes, for example, because you can then "scale" the response across the key range to match the behavior (low keys to high keys) - you wouldn't necessarily construct a completely different behavior, you'd use the scaling function to make low keys have longer envelopes than higher keys.
As an example, take a look at the 18 Elements that make up the "CFX Concert" Acoustic Grand - you can get a good sense of how programming works (when doing it efficiently). That said....

Third Party Editors
However, it can happen that you want to do something completely different or you want to co-op some specific programming detail from one of the factory programmer's work. If it is at the Element level of the architecture or (deeper) in the Waveform/KeyBank sample level of the architecture, you may wish to invest in the computer tools - (our recommendation is the Melas MONTAGE Tools (which includes the Performance Editor/Live Set Editor/Total Librarian) and if you get into custom Libraries: the Waveform Editor). If this is your goal - then you are a definite candidate for the Editors (they are not recommended necessarily for everybody - but are highly recommended for those who wish to dig deeper).

On point: The Melas Performance Editor --- "Supports copy/paste for Parts, Effects, AWM2 Elements, FMX-Operators, Drum Keys, Controls Sets, Motion Sequence Lanes, Arpeggiator Parts and Zones!"

If you are taking another programmer's work and wish to COPY a specific portion of it, opening the Performance data on your computer in the Melas PERFORMANCE EDITOR gives you much more surgical Copy and Paste functions. This is the way!

Highly recommended for those who wish to do their own from scratch programming.
We also recognize that the majority of users - do not dive down to that level (you should too)... what is available and accessible to the on-board the firmware will serve the majority of users just fine.

Hope that helps.