No worries if your visa was not cancelled in Bahrain. You can have your Qatar working visa here in Qatar. last year I was on a working visa from Abu Dhabi and it was not cancelled, I came here in Qatar as visit visa, Im worrying when I was applying but they told me there was no problem. After 4 days the PRO said my visa is successfully transferred to a working visa.
No worries if your visa was not cancelled in Bahrain. You can have your Qatar working visa here in Qatar. last year I was on a working visa from Abu Dhabi and it was not cancelled, I came here in Qatar as visit visa, Im worrying when I was applying but they told me there was no problem. After 4 days the PRO said my visa is successfully transferred to a working visa.