How to recover vertex that removed?

[StromanStroman]

I got a custom data model,which recording removed vertex,working vertex,removed face,working face.I want to create a surfacemesh according to the data model.
But I met several questions.
Vertexes has their ordered vertex indexes in the data model,which starting from 0 and increasing sequentially, so as faces.
I want to map the same ordered indexes for vertex and face in the surfacemesh which I create.
When add_face sequentially,current inserting face can not be inserted,for it has topology problem with some face inserted before,maybe overlaped or something else.So I got a null face.
I set set_recycle_garbage to false.And I use CGAL::Euler::remove_face to truly remove a new inserted face if this face is marked removed in the data model.But the CGAL::Euler::remove_face also removes related vertexes of the face which is not what I want.
Then if I will insert a face using the removed vertex , I also got a null face.
So I want to know how to recover the vertex removed by CGAL::Euler::remove_face?
Or could you tell me a better way to map my custom data model to a same surfacemesh ?

Environment

• Operating system (Windows 64 bits):
• Compiler:Visual Studio 2022 community
• Release or debug mode:debug
• Specific flags used (if any):
• CGAL version:5.6
• Boost version:1.79.0
• Other libraries versions if used (Eigen, TBB, etc.):

[StromanStroman]

I want to reuse those vertexes.

[afabri]

Hello @StromanStroman,
Is this still an open question or did you find an answer yourself?
I guess you didn't get an answer, because you did not make an effort to clearly express yourself. There is no typesetting, no backticks around function names, no self-contained example code. You make it an effort for people to just understand what the issue is.