Changing jobs while on approved I-140

[abhicool20]

I am working for Company A and have questions changing jobs internally or externally with approved I-140 and beyond 6 years on H-1B: 1) If I get another position within Company A, Will that affect my H-1B and I-140 even though its the same employer? 2) What happens if I change employers and get a job with a different employer - how will that affect my I-140? Can the new employer use my current priority date? 3) Also if I am switching jobs and my I-140 becomes current - what happens then? Will I be able to apply for change of status using the new employer? 4) And In case I am still with Company A but took another position and (during H-1B and/or I-140 transfer to new position if there is one needed even for job change within same company) priority date becomes current, what happens in that case? Can I still use old priority date?