I am looking for a simple way to concatenate one geospatial pdf (with multiple layers in a single image) and regular pdf. I have tried tools such as pdfunite, pdftk and pdfconcat, without success. The result is always a regular pdf, losing the layers and geospatial references.
Does it exist a simple tool for merging/concatenate geospatial pdfs? Have anyone else solved this problem using another method?