Merging Adjustment layers to pixel layers removes the adjustment

[sweeetjd]

If you attempt to merge the adjustment layer with the pixel layer it id affecting, the adjustment is discarded. This occurs in the adjustment’s menu and if you attempt to merge the two using the merge layer menu item.

[NotMyFault]

1 hour ago, sweeetjd said:

the adjustment is discarded.

No, it effect is merged into the pixel layer, and then the now superfluous layer it is deleted as intended and integral functionality of this merge function.

If you want to keep the adjustment layer, duplicate it before merging.

If I misread your post, please give more context e.g. test documents and screenshots showing the actual issue.

[sweeetjd]

I figured it out, I was applying a posterize effect, which for some reason causes a little bit of antialiasing to occur. In this case, it made out look like nothing had occurred once applied. I’ve included the before, during, and after photos. The antialiasing is a little frustrating, I’m trying to get those crisp edges. Is there a way to disable that?

[NotMyFault]

Anti-aliasing can only be deactivated for vector layers only, in blend options (cog symbol of layer).

If you see anti-aliasing for pixel layers, those layers

1. have been either stretched by move/transform tool,
2. and/or positioned to fractional positions.

To avoid #2

1. position to integer coordinates only

to avoid #1

1. use „pixel Art resize“ instead of move tool to resize (affects full document, so may copy/paste layer to a new document)
2. export to a new file with resample method „nearest neighbor

To mitigate the anti-aliasing in post:

1. add levels adjustment 
2. choose alpha channel
3. set white level to 0