This is a tricky question. In fact, if you stay outside the US for more than 6 months, there is a presumption of abandonment, for one year, it might be considered abandonment. I will advise you to file for a re-entry permit in case you want to stay outside for longer. I will recommend meeting with a lawyer to analyze your situation not to jeopardize your green card in the future.
Founder and Managing Attorney of Shah Peerally Law Group PC
The Law Firm Deals in Immigration law, Bankruptcy & Debt Relief
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