It doesn't matter how I save my project (Qconsolidate-Plugin, Relocator-Plugin, QPackage-Plugin or manual), the output is always defective: The export always consists (as shown in the picture) of three layers per one original layer in my original project: One .shp-layer, one .shx-layer and one .dbf-layer.
Additionally the .qgj-file, the .prj-file and the .cpg-file of every layer are "no valid data sources" referring to the defect report of QGIS.
The result is a wrong projection and a wrong symbology.
How ist that possible?