What are the complications if h1b transfer is applied in April 1st week?

"Transfer" is not applicable at this stage. The second company filing an H1B petition for you will also file its H1B petition as "new employment"...

Work authorization

There is automatic extension of 180 days applied to the current EAD's expiration date if the extension application is based on pending adjustment...

Can I use an H1-B older than 6 years?

Any company can file an H1B petition that will be exempt from the visa cap no matter how long ago you were in H1B status. You have 4 years...

Can I travel outside USA when my employer has filed for H1b Amendment

A departure with a pending H1B amendment will not invalidate it since it is not an "extension of status" or "change of status" application....

H1b extension based on approved I140

An I-140 approved for at least 180 days (even if subsequently revoked) through a company will allow any company to file H1B extensions indefinitely...

Employment through an unexpired EAD is not a violation of H4 status. Even you could use your EAD and maintain your H1B status if you were also...

Could I go back home without immigration final response ?

The USCiS will deny a pending change of status application if you depart the U.S. As advised by my colleague, save a copy of all correspondence...

You can be employed by by any company that files its H1B petition requesting extension of H1B status during the 60-day grace period after...

MY wife is on F1 opt and currently is on maternity break and I wanted to move her to H4 EAD what is the process ?

For your spouse to file for EAD based on H4 status requires the principal H1B spouse to provide evidence of I-140 approval, or evidence that his or...

Can i travel to Mexico and Puerto Rico?

Traveling to Puerto Rico is like traveling to another part of the U.S. and is always OK. Traveling to Mexico for up to 30 days is OK if you...