wallet2: fix create view-only wallet from existing wallet

src/wallet/api/wallet.cpp

@@ -535,7 +535,7 @@ bool WalletImpl::createWatchOnly(const std::string &path, const std::string &pas
         view_wallet->generate(path, password, address, viewkey);
 
         // Export/Import outputs
-        auto outputs = m_wallet->export_outputs();
+        auto outputs = m_wallet->export_outputs(true/*all*/);
         view_wallet->import_outputs(outputs);
 
         // Copy scanned blockchain
@@ -553,7 +553,7 @@ bool WalletImpl::createWatchOnly(const std::string &path, const std::string &pas
 
         // Export/Import key images
         // We already know the spent status from the outputs we exported, thus no need to check them again
-        auto key_images = m_wallet->export_key_images();
+        auto key_images = m_wallet->export_key_images(true/*all*/);
         uint64_t spent = 0;
         uint64_t unspent = 0;
         view_wallet->import_key_images(key_images.second, key_images.first, spent, unspent, false);

src/wallet/wallet2.cpp

@@ -13326,9 +13326,7 @@ size_t wallet2::import_outputs(const std::tuple<uint64_t, uint64_t, std::vector<
   THROW_WALLET_EXCEPTION_IF(offset > m_transfers.size(), error::wallet_internal_error,
       "Imported outputs omit more outputs that we know of");
 
-  THROW_WALLET_EXCEPTION_IF(offset >= num_outputs, error::wallet_internal_error,
-      "Offset is larger than total outputs");
-  THROW_WALLET_EXCEPTION_IF(output_array.size() > num_outputs - offset, error::wallet_internal_error,
+  THROW_WALLET_EXCEPTION_IF(offset + output_array.size() > num_outputs, error::wallet_internal_error,
       "Offset is larger than total outputs");
 
   const size_t original_size = m_transfers.size();
@@ -13408,9 +13406,7 @@ size_t wallet2::import_outputs(const std::tuple<uint64_t, uint64_t, std::vector<
   THROW_WALLET_EXCEPTION_IF(offset > m_transfers.size(), error::wallet_internal_error,
       "Imported outputs omit more outputs that we know of. Try using export_outputs all.");
 
-  THROW_WALLET_EXCEPTION_IF(offset >= num_outputs, error::wallet_internal_error,
-      "Offset is larger than total outputs");
-  THROW_WALLET_EXCEPTION_IF(output_array.size() > num_outputs - offset, error::wallet_internal_error,
+  THROW_WALLET_EXCEPTION_IF(offset + output_array.size() > num_outputs, error::wallet_internal_error,
       "Offset is larger than total outputs");
 
   const size_t original_size = m_transfers.size();