Using Advanced Search on the web at app.sortly.com, it's now possible to group items that share the same SID together across your search parameters. With this new feature, it becomes much easier to find the same item that exists in multiple folders.
When you are using the Advanced Search feature, you can still filter within folders, by tags, custom fields, etc. In the example below, our search is initially sorted by quantity based on the filters we selected on the left.
With the more robust summaries feature, you can select "show summaries" which will automatically find items that share the same SID within your search criteria and group them together.
If you want to drill down these results, you can click on the "down arrow" to see each of the items and where they live within your inventory.
If you need to make any changes to these items in aggregate, you can select the item by checking the box in the top left of the item, which will enable the bulk actions bar seen here: