I just discovered a little mytery on Geopackage rasters and QGIS 3.4: - Exporting a img-Raster into a Geopackage works fine - also opening it - Opening the this "geopackage raster" in ArcGIS Pro 2.3.3 does not work - Exporting the same raster with AG Pro into the geopackage works and also opening this one in QGIS or AG Pro :-) - Having a look with the QGIS DB Manager on the geopackage with the raster was myterious: It just showed the raster created by AG Pro in the geopackage, but not the rasters created by QGIS ???
Does someone know why the IMG-->GeoPackage raster does not work with AG Pro and is not shown in the QGIS DB Manager, whereas the AG Pro created rasterlayer in this geopackage works well and is shown in QGIS DB Manager ? The difference seems to be the data_type-field (Screenshot 3).