I accidentally digitized a layer (geopackage) in WGS84 (EPSG 4326). Now I need to reproject it into ETRS89/UTM zone 32N (EPSG 25832). I tried it in different ways which usually work without a problem (saving layer as esri-shapefile or as geopackage layer with the updated projection). But in this case, the resulting layers cannot be displayed (see screenshot with the resulting layer's properties).
What am I missing here?
As you say that you accidentally digitized features in a layer in WGS84, my presumption is that you digitized them in Cartesian planimetric coordinates instead of geographic coordinates.
For example, I could digitize a square of vertices (-500, -500) and (500, 500).
In a planimetric projection reference system, that polygon could be a square of 1000 meters on each side, centered at the origin. However, in a geographic coordinate system, that polygon is defined totally outside the extents of the terrestrial surface.
When reprojecting the geographic coordinate layer to a planimetric projection system, the polygon changes its coordinates for others, equally invalid (out of the extents).
Therefore, it may be the case that a layer should not be reprojected, but just defined the appropriate reference system in it.
