Inconsistent result: saving luminosity selection with menu command vs Channel panel button

[Pixelpaddler]

I have discovered that when I save a luminosity selection using the menu commands: Select>Save Selection it produces a channel where the mask is inverted from what I expect. However, when I save the same selection using the Channels panel button, Save Selection as Channel, it saves the mask properly, that is, not inverted. 

I also recorded an action to accomplish creating the Alpha channel using the luminosity selection. Again, when done manually, the saved mask if not inverted. While I am recording the action, it is also saved properly. However, when I run the action, the resulting mask is inverted. 

Sometimes (don't you hate it?), when I load the selection from the channel with the inverted mask and do a Curves Adjustment Layer, the mask loads in the uninverted form without me knowingly doing anything. However, this behavior is inconsistent. 

I cannot see anywhere in PS where I could give direction regarding whether to save a mask as inverted or not when building an action. 

Background: Am on a 27 in. 2017 iMac, 2 TB SSD mem, running macOS 10.14.6 and PS 21.1.0.

Have tried many things: cleared cache and restarted computer, uninstalled and reinstalled PS, uninstalled and installed a back version PS20.0.3. 

[jazz-y · Accepted solution]

In the channel panel click button "new channel" with alt pressed (or run a similar menu command)

Menu command "save selection" receives the masking options specified in this window (if you select masked areas, then all next selections will be normal, if you select selected areas, then the selections will be inverted). To change options for an existing channel, double-click the channel thumbnail in the Channels panel or select Channel Options from the Channels panel menu.

[Pixelpaddler]

Thank you! Had tried changing this option but it wasn't successful. Perhaps had something out of order. Worked this time, however, so I'm thrilled. 

[Pixelpaddler]

Further distinction: on further testing, discover the Options dialog I had tried using was the Quick Mask Mode Options dialog. Except for the title bar, it is identical to the New Channel options dialog. Changing the options on the Quick Mask Mode Options dialog did not change the behavior when the action was run. Changing the option in the New Channel options dialog did, however, change the outcome of the action. 

Appreciate immensely having the solution.