Yes, you should receive a 1099-R for the transfer of a 401k to another 401k plan. The distribution 1099-R should have a Box 7 code of G (or H for a Roth). The code makes the distribution not taxable.
Contact the custodian of the original 401k account. Even though the distribution is not taxable, you need to know if a 1099-R was sent to the IRS. If it was, they will be looking for the matching form on your return.
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