Changing employers( same kind of job) with approved I140?

Yes, employer C (or D, E, etc.) can file an H1B petition for you requesting extension of H1B status beyond six years based on I-140 approval from...

Can employer withdraw only approved H1B petition or the one that was not selected in lottery?

The H1B petition was withdrawn by your employer. If it was already approved before your employer took action, it would have been "revoked." A...

Can I travel on CPT with a student visa that has 7 months remaining on it? Do I need to extend the visa? I am on my 3rd Masters.

Since you have maintained your F1 student status, the denial of the H1B petition should not impact the validity of current F1 visa in passport....

Can I send I485 before I130 is approved when applying via a permanent resident?

Assuming that the priority date is current (visa is available in the F2A category per the state department visa bulletin), you must be maintaining...

A new PWD is required. There can be no material variance between the information on the PWD and the job on the PERM application.

Can I travel from USA to INDIA while my application for Green Card (Category of parents) under Process

If I-485 adjustment of status application package has been filed (and not just the I-130 "petition for alien relative"), then you must wait for...

Does approved i140 EB1 carry over after switching to new employer?

The I-140 appears to be approved in the EB1C category for multinational executives/managers. There is no portability here--you cannot adjust status...

H4 related question?

As long as the timely H4 application requesting extension of status is pending with the USCIS, your wife is authorized to remain in the U.S....

Is it recommended to wait some time before changing employer (H1b) after you receive your EAD through marriage?

Changing employers on the basis of EAD will not impact the green card process except in the circumstance foreseen in your email: if your I-485 is...

As this appears to be "initial" EAD based on I-485 filing, and not a renewal of this category, you should wait until EAD is issued once OPT EAD...