diff --git a/src/interfaces/chain.h b/src/interfaces/chain.h
--- a/src/interfaces/chain.h
+++ b/src/interfaces/chain.h
@@ -124,10 +124,6 @@
         //! Get block time. Height must be valid or this function will abort.
         virtual int64_t getBlockTime(int height) = 0;
 
-        //! Get block median time past. Height must be valid or this function
-        //! will abort.
-        virtual int64_t getBlockMedianTimePast(int height) = 0;
-
         //! Check that the block is available on disk (i.e. has not been
         //! pruned), and contains transactions.
         virtual bool haveBlockOnDisk(int height) = 0;
diff --git a/src/interfaces/chain.cpp b/src/interfaces/chain.cpp
--- a/src/interfaces/chain.cpp
+++ b/src/interfaces/chain.cpp
@@ -94,12 +94,6 @@
             assert(block != nullptr);
             return block->GetBlockTime();
         }
-        int64_t getBlockMedianTimePast(int height) override {
-            LockAssertion lock(::cs_main);
-            CBlockIndex *block = ::ChainActive()[height];
-            assert(block != nullptr);
-            return block->GetMedianTimePast();
-        }
         bool haveBlockOnDisk(int height) override {
             LockAssertion lock(::cs_main);
             CBlockIndex *block = ::ChainActive()[height];
diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -1720,21 +1720,15 @@
         EnsureWalletIsUnlocked(pwallet);
 
         // Verify all timestamps are present before importing any keys.
-        const Optional<int> tip_height = locked_chain->getHeight();
-        now =
-            tip_height ? locked_chain->getBlockMedianTimePast(*tip_height) : 0;
+        CHECK_NONFATAL(pwallet->chain().findBlock(
+            pwallet->GetLastBlockHash(),
+            FoundBlock().time(nLowestTimestamp).mtpTime(now)));
         for (const UniValue &data : requests.getValues()) {
             GetImportTimestamp(data, now);
         }
 
         const int64_t minimumTimestamp = 1;
 
-        if (fRescan && tip_height) {
-            nLowestTimestamp = locked_chain->getBlockTime(*tip_height);
-        } else {
-            fRescan = false;
-        }
-
         for (const UniValue &data : requests.getValues()) {
             const int64_t timestamp =
                 std::max(GetImportTimestamp(data, now), minimumTimestamp);
diff --git a/src/wallet/test/wallet_tests.cpp b/src/wallet/test/wallet_tests.cpp
--- a/src/wallet/test/wallet_tests.cpp
+++ b/src/wallet/test/wallet_tests.cpp
@@ -165,6 +165,9 @@
             std::make_shared<CWallet>(Params(), chain.get(), WalletLocation(),
                                       WalletDatabase::CreateDummy());
         wallet->SetupLegacyScriptPubKeyMan();
+        WITH_LOCK(wallet->cs_wallet,
+                  wallet->SetLastBlockProcessed(newTip->nHeight,
+                                                newTip->GetBlockHash()));
         AddWallet(wallet);
         UniValue keys;
         keys.setArray();