Job change on Stamp1 - CSE permit in Ireland after 12months

[playvergil]

Hello,

I need help regarding two queries.

1) I have spent first 12 months + with my first employer on CSE permit and Stamp1. Can I move to another employer staying on Stamp1 if new employer provides me a CSE permit?

2) If yes, and if I join a new employer with their CSE permit, will my road to stamp4 21 months get resetted? Like I have 8 months for complete 21 months on stamp1 and will file Stamp4, so if there is no gap when I change job and permit, my previous 13 months would be counted as well and I can just do 9 more months with new employer on Stamp1 and move to Stamp4? Or I need to redo complete 21 months again with new employer if I change job and they issue a new permit to me?

Please advise.

Thanks,