GST - ITC

Kindly guide regarding one more query please:

I had a query regarding GST, seeking your guidance for the same
A private limited company is having GSTN in Maharashtra state and has now taken new GST registration in Gujarat state
So now the company ( having GSTN in both Maharashtra and Gujarat state) is planning to send goods from Maharashtra to Gujarat

Please guide regarding the GST implications , filings and compliances under both scenarios  :

1. If there is stock transfer from Maharashtra branch to Gujarat branch of the same company, what filings need to be done and will the company's ITC be transferred from Maharashtra to Gujarat state on stock transfer

2. If there is sale of goods from Maharashtra branch to Gujarat branch of the same company , what filings need to be done will the company's ITC be transferred from Maharashtra to Gujarat state on stock transfer

(The company is planning to send goods via transport vehicle by generating e-way bill)

Thanks in advance