H1-B Approved. Can the company revoke my H1-B? Can I capture the approved duration from other company?

[NP1983]

Hello,

 

My H1-B is approved ( Not Stamped) till June 2021. I plan to go to India for personal reasons. Can my current company revoke this H1-B? If they do, Can I use the same case number to file for fresh H1-B and capture the unused duration?

[pontevecchio]

Have you been working in H1 status ?