Peter, thanks for doing this. For someone with I-140 approved and now waiting for the priority date to become current for a long time due to the GC backlog, ho

Peter, thanks for doing this. For someone with I-140 approved and now waiting for the priority date to become current for a long time due to the GC backlog, how does relocating outside the US affect the validity of I-140 approval? Or in other words, is it possible to quit the sponsoring employer, work in the home country till the priority date is current, and then restart the GC process using the last I-140's priority date with a new US employer? If so, can the H-1B application with the new employer be done without going through the cap and using the indefinite extension provision?