H1B transfer without current extension approval copy not yet received

[pd_2050]

My H1B extension was recently approved, yet to receive paper copy of I-797.

I have 140 approved with 180 days criteria complete for the current employer. I work in EC model, my current project is ending soon and I have an offer from new employer. 

I have following questions - 

1. Can transfer be initiated for the new employer at this point based on online approval notification Or do I need to wait until paper copy of I-797 is received?
2. Is it safe to join new employer on receipt or wait until transfer is successful? How soon can I join the new employer?
3. What are the documents required for the transfer?
4. Will my current employer know that I have started transfer?
5. Will I fall into 60 days grace period if current employer revokes my current H1B after project is over and transfer is pending?

Any guidance is greatly appreciated. 

Thank you! 

[gopalakrishnach]

1. Better get paper copy. If not I am sure your new employer can still do transfer.

2. Best advice transfer is complete. On receipt notice

3. Employer will help.

4. Nope.

5. I guess so

[pd_2050]

On 8/18/2020 at 12:33 PM, gopalakrishnach said:

1. Better get paper copy. If not I am sure your new employer can still do transfer.

2. Best advice transfer is complete. On receipt notice

3. Employer will help.

4. Nope.

5. I guess so

@gopalakrishnach Thank you so much for your reply. 

I have a follow-up question regarding 60 day grace period. Does the grace period start a day after last pay check period from employer or after the last day of the project with client?