Dear ABraun,
thank you for your answer.
Actually, these are Cosmo-SkyMed product in SLC (L1A) processing level. Amplitude has been extracted, and a coregistration between two products in interferometric conditions has been realised. Finally, products have been flipped (with the data flip tool) but they cannot be terrain corrected properly as there are no tie-point grids (from what I understood). All vectors are in same coordinate reference system.
What I forgot to mention is that I can add other vector (polygon shaped) from the same dataset and it works fine (see the attached image).
What do you mean by “open the vector alone in the layer manager”? It seems I cannot open a vector if there is not a raster opened.
