L1 to H1 Change of status

[deepaa]

Currently on L1b with the company A, applied for  H1b in the year 2016 with the company B & traveled in between for family emergency to India, hence my H1 was approved & Change of status was denied. 

Continued working with Company A & in the year Dec 2017, applied for Change of status with Company C & my change of status was approved on 4/5/18 & I just got to know on 4/11/18. 

I would like to continue with Company A on L1b, As offer made by Company C is too low. I still have my L1b valid till this year end 2018, can I travel to Canada & come back on L1b?

Urgent, please help with the right solution