Enroll in HRA Plan and Use HSA Account

New employer offering HRA plan and HSA plan. The HRA plan is cheaper and has lower deductible than HSA plan and company contributes money into HRA. I have been on a HSA qualified plan in past that allows be to have tax deductible contributions into HSA. Can I enroll in HRA plan and still use existing HSA account and contribute to it? If so, are there any limitations?

thanks

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