PS Multi-form part copy between "Dumb method"

PS Cut page, sometimes you might encounter situations like this: design improvements, however, we want to have the same slices.
In this hypothesis, it can be used directly for cutting slices. We can save a lot of time, and also divided into pieces.

However, people will not generally be on your upper cross-chip design psd in the change, however, will output PSD again.
Is it possible to copy a sliced slice of a psd into a PSD?
Unfortunately, PS CS6 still does not support copying slices between multiple forms. Only copy slices in the window (press ALT and drag slices to copy within the window).

Although slices cannot be copied, layers can be copied!
In fact, it is also possible to remove all layers from the original PSD that have been sliced. All the layers in the new PSD are then copied to the original PSD, which can also be achieved.

The PSD that is actually used for slicing. Because there is no need to make any further changes, you can flatten the layers before copying them, and the operation is faster. Smaller file size.

A new problem arises.
Because I do not know the PS bug, sometimes even if the PSD layer all merge or delete and then save, its volume will be more than the same layer copied to the new file and then save much larger.

I sometimes want to archive a PSD that includes slices, which is too big to be worse.
Then I think of the compressed volume, just copy the layer to the new file and save it. However, as mentioned above, the slices cannot be copied!

Later thought of a way, a "semi-self-initiative" approach:
1. First copy the old PSD layer to the new PSD, the old and new file size is the same;
2. Switch to the old PSD form. Open the Actions panel and start recording the action:
2.1. Double-click a slice to eject the slice properties form. Make a little change to the attributes that need to be copied (note);
2.2. Once again open the attribute form of the same slice, and change the properties that need to be copied back;
2.3. Run steps 2.1 and 2.2 for each slice in turn, and end the recording action after all finishes.
3. Switch to the new PSD form, and then play the action you just recorded.

At this point the slices in the new PSD will be the same as in the old PSD, with the slice layout and the slice properties that have just been edited.

Note: Why modify the slice properties first. And then change it back?
Since PS is recording the action, it only records the modified values in the dialog box. (Is this also a bug?) There's a better way, I don't know? ）
So in order to let the action in the play, you can actively set the properties of new slices, must find ways to create a "modified" effect.

Conclusion:
Compared to a purely manual and another slice, the advantage of the "semi-self-active" approach is that the odds of a mistake may be slightly smaller, and will not significantly save a lot of time (unless you have a file that requires copying the same slice).
Just to shrink some of the file size, it seems like it's not worth the fuss.
Since there is such a problem. That must have been the original slice PSD did not notice the volume of the file at the time, directly on the top of the slice.

Let's say that at the beginning of the first slice, just by copying the layer to a new file to avoid this problem, the new PSD application can also be "duplicated layer" by direct slicing in order to achieve the goal.

Ps:ps has a strange bug, sometimes directly in the PSD draw slice production jpg file, output volume volume will be inconsistent with preview. More than hundreds of K; copied to the new file according to the same diagram, then the slice output avoids this problem.

PS Multi-form part copy between "Dumb method"