diff --git a/freqtrade/data/history.py b/freqtrade/data/history.py
index 1970f05d5..c83e91bac 100644
--- a/freqtrade/data/history.py
+++ b/freqtrade/data/history.py
@@ -76,20 +76,6 @@ def store_tickerdata_file(datadir: Path, pair: str,
     misc.file_dump_json(filename, data, is_zip=is_zip)
 
 
-def load_trades_file(datadir: Path, pair: str,
-                     timerange: Optional[TimeRange] = None) -> List[Dict]:
-    """
-    Load a pair from file, either .json.gz or .json
-    :return: tradelist or empty list if unsuccesful
-    """
-    filename = pair_trades_filename(datadir, pair)
-    tradesdata = misc.file_load_json(filename)
-    if not tradesdata:
-        return []
-
-    return tradesdata
-
-
 def load_pair_history(pair: str,
                       timeframe: str,
                       datadir: Path, *,
@@ -198,12 +184,6 @@ def pair_data_filename(datadir: Path, pair: str, timeframe: str) -> Path:
     return filename
 
 
-def pair_trades_filename(datadir: Path, pair: str) -> Path:
-    pair_s = pair.replace("/", "_")
-    filename = datadir.joinpath(f'{pair_s}-trades.json.gz')
-    return filename
-
-
 def _load_cached_data_for_updating(datadir: Path, pair: str, timeframe: str,
                                    timerange: Optional[TimeRange]) -> Tuple[List[Any],
                                                                             Optional[int]]:
diff --git a/tests/data/test_history.py b/tests/data/test_history.py
index 77cb6a565..fef7a3149 100644
--- a/tests/data/test_history.py
+++ b/tests/data/test_history.py
@@ -11,13 +11,14 @@ from pandas import DataFrame
 
 from freqtrade.configuration import TimeRange
 from freqtrade.data.datahandlers import get_datahandler
+from freqtrade.data.datahandlers.jsondatahandler import (JsonDataHandler,
+                                                         JsonGzDataHandler)
 from freqtrade.data.history import (_download_pair_history,
                                     _download_trades_history,
                                     _load_cached_data_for_updating,
                                     convert_trades_to_ohlcv, get_timerange,
                                     load_data, load_pair_history,
-                                    load_tickerdata_file, pair_data_filename,
-                                    pair_trades_filename,
+                                    load_tickerdata_file,
                                     refresh_backtest_ohlcv_data,
                                     refresh_backtest_trades_data, refresh_data,
                                     trim_tickerlist, validate_backtest_data)
@@ -143,14 +144,21 @@ def test_testdata_path(testdatadir) -> None:
     assert str(Path('tests') / 'testdata') in str(testdatadir)
 
 
-def test_pair_data_filename():
-    fn = pair_data_filename(Path('freqtrade/hello/world'), 'ETH/BTC', '5m')
+def test_json_pair_data_filename():
+    fn = JsonDataHandler._pair_data_filename(Path('freqtrade/hello/world'), 'ETH/BTC', '5m')
     assert isinstance(fn, Path)
     assert fn == Path('freqtrade/hello/world/ETH_BTC-5m.json')
+    fn = JsonGzDataHandler._pair_data_filename(Path('freqtrade/hello/world'), 'ETH/BTC', '5m')
+    assert isinstance(fn, Path)
+    assert fn == Path('freqtrade/hello/world/ETH_BTC-5m.json.gz')
 
 
-def test_pair_trades_filename():
-    fn = pair_trades_filename(Path('freqtrade/hello/world'), 'ETH/BTC')
+def test_json_pair_trades_filename():
+    fn = JsonDataHandler._pair_trades_filename(Path('freqtrade/hello/world'), 'ETH/BTC')
+    assert isinstance(fn, Path)
+    assert fn == Path('freqtrade/hello/world/ETH_BTC-trades.json')
+
+    fn = JsonGzDataHandler._pair_trades_filename(Path('freqtrade/hello/world'), 'ETH/BTC')
     assert isinstance(fn, Path)
     assert fn == Path('freqtrade/hello/world/ETH_BTC-trades.json.gz')