Edits I make show up on the report, but not correctly. I just submitted a separate bug report about this.
The test business I used did have a notice for changes needed on production stages. When I rectified those, various things were modified. But the report still was not correct. Clearly, more work is needed.
As I understand you though, @Mule1, you can edit inventory locations. They just do not reflect properly in the Inventory Quantity by Location report. Is that correct? If so, it suggests the problems may be confined to the report, not inventory location settings.