When Jesus was resurrected, did he appear to his disciples yet his body was still buried?
No, he appeared in his body. The tomb was verifiably empty. He only had one body.
If the resurrection will follow in the same pattern as Jesus, then doesn't it make sense that if the anointed or any who die have been resurrected yet, their body would have vanished?
Yes
For believers, "to be absent from the body is to be present with the Lord". At death, the believer's soul is taken to heaven. At the rapture, the resurrection takes place and NT believers are united with their bodies..... glorified bodies, incorruptible. If alive on earth at that time, they are simply taken to heaven body and all, but changed.