Hi, Thanks for your question. It should be removed first then the new one can be installed. Let us know if there is anything else we can help you with.  
Hi everyone: I need your help, I need to install RP4VM on VxRail 7.0.3 because it was previously deleted when VxRail was upgraded from 4.7. Checking if it was completely removed, I find that the JAM vib (emcjiraf) is still installed on the hosts. Can RP4VM be installed without problems or should I remove the vib before it? The vib JAM has version 5.2.2. Regards,    
RP4VM with VxRail 7.0.3