LR's stacking is poorly designed and confusing -- a stack is specific to a folder or a collection, and you can only see the stack while in that folder or collection. (An exception is that folder stacks are also visible when you select a parent folder or All Photographs as the source.) The various commands that create stacks are inconsistent -- some create the stack in the current collection or folder only, while other commands create two stacks, one in the current collection and one in the current folder (but these are separate stacks).
For your use case, I suggest using a different mechanism to mark photos for editing: flags (Photo > Set Flag), color labels (Photo > Set Color Label), or keywords (you can mark the keywords as not "Include On Export" so they're not included in exported pics). Then you can use the Library Filter bar to filter your main collection A for pics to work on. These mechanisms have various shortcuts that make working with them efficient and easy.
Adobe's documentation on stacking was never updated after LR 4 changed the stacking design. Please add your me-too vote to this bug report in the official Adobe feedback forum: Lightroom: Incorrect documentation for stacking | Photoshop Family Customer Community
Also, please add your me-too vote and details of your use case to this feature request to simplify stacks: Lightroom: Stacking in folders and collections should be global | Photoshop Family Customer Community
thanks for the info/confirmation
i guess my other question will be that if i had to still do Edit in Adobe Photoshop, what would be the possible or best approach so that after editing in photoshop, my changes will either be saved on a single file or at least merge or link the connected/stacked files that photoshop will create after the edit, assuming for my purpose for example, that i need only the edited version
The complete workflow would be:
- Use only the main collection (collection A).
- Mark photos in the collection to be edited using flags, color labels, star ratings, or keywords.
- Use the Library Filter bar to filter for just those photos marked for editing.
- To edit, select the photo while in the collection and do Photo > Edit In. The edited copy will be stacked with the original in the collection (and also in the folder containing the two pics).
oh ok i got that.. thanks!!