- Lightroom Version Number
- Lightroom Classic version: 7.4 [ 1176617 ]
- Operating System
- macOS 10.13 High Sierra
I have a collection in Lr that I split into a number of smaller collections. When I selected subsets of the original collection and dragged them into the smaller collections, I ended up with a smaller total number of photos. As in the thread "Library module: Inconsistency in Collection count, feature or bug?", stacks caused the problem: Selecting a collapsed stack only copied the top photo in the stack, not the whole stack. Opening all the stacks got all the photos in all the stacks, but the smaller collections no longer had the stacks in them, because stacking is local to a collection. Stacks are not treated as an objects across the library.
Eventually, I found a workaround. It only works for the specific case of splitting a larger collection into smaller ones, not for merging or rearranging collections. (Perhaps there is some way using metadata to preserve stack info in more general cases.)
When you right-click a collection and select Duplicate Collection, the copy retains all stacking and open/closed state of the original collection. So you can proceed as follows. For each smaller collection you want to create:
1 Use Duplicate Collection to create a copy of the original
2 In the copy, select all the photos you don't want in the small collection
3 In the selection, right-click > Stacking > Unstack
4 Hit delete
5 Rename the small collection as desired
Since I only needed to split the original into five pieces, this process didn't take too much time.
R
Eventually, I found a workaround. It only works for the specific case of splitting a larger collection into smaller ones, not for merging or rearranging collections. (Perhaps there is some way using metadata to preserve stack info in more general cases.)
When you right-click a collection and select Duplicate Collection, the copy retains all stacking and open/closed state of the original collection. So you can proceed as follows. For each smaller collection you want to create:
1 Use Duplicate Collection to create a copy of the original
2 In the copy, select all the photos you don't want in the small collection
3 In the selection, right-click > Stacking > Unstack
4 Hit delete
5 Rename the small collection as desired
Since I only needed to split the original into five pieces, this process didn't take too much time.
R