Hi @eyal.ch,
after numbering (identical part recognition), the number of the objects is determined. If you don't make changes in the model, don't assign the exact number to the parts in their properties, etc. .... you can't expect changes in the BOM (internal & external). Otherwise, such a system does not behave like intelligent 3D, where manual changes are not meaningful (such as, for example, in the 2D AutoCAD world).
The informations in the BOM are linked via TOKENS to the part information(s) in the model (intelligent addiction). If you want changes in BOM, edit the model / properties of the part.
Use MAPPING to get the part description, if you don't want to change the standard description in Management Tools.
Any other manual changes to such informations in BOM lead to model inconsistency (without reciprocal binding) - lots of fun with any next update / revision, even for the rest of your colleagues.
PS: by using Printscreen and Paint you can achieve your result in the simplest way 😉, it does not change future problems (see above).