I was tracing an area with Potlatch when I realized that level 18 zoom is newer than level 19 (both zoom level doesn't match the highways very well, off by a few meters). If I switched to JOSM, is there a way to lock the image layer at zoom 18, and then increase the zoom? (it may be pixelated, but I prefer to trace on latest image).
Thanks, that worked in JOSM. (as long as I remember to activate that option!). Especially helpful since Mapbox made their imagery available at zoom level 17.