diff --git a/calculate/templates/template_processor.py b/calculate/templates/template_processor.py
index ace9ee4..e8289ce 100644
--- a/calculate/templates/template_processor.py
+++ b/calculate/templates/template_processor.py
@@ -1017,7 +1017,11 @@ class TemplateExecutor:
                     # Тогда также обновляем архив.
                     output_paths.append(template_object.archive_path)
 
-                if template_object.target_type is not None and not replace:
+                # TODO Сделать это как-нибудь получше
+                if replace:
+                    input_text = ''
+                elif (template_object.target_type is not None
+                     or template_object.parameters.source):
                     # Если целевой файл есть и нет параметра replace --
                     # используем текст целевого файла.
                     if (not input_path.startswith(self.cl_config_archive_path)
diff --git a/tests/templates/test_template_executor.py b/tests/templates/test_template_executor.py
index 1869f8f..c4facf3 100644
--- a/tests/templates/test_template_executor.py
+++ b/tests/templates/test_template_executor.py
@@ -2279,6 +2279,11 @@ class TestTemplateExecutor:
                                        chroot_path=CHROOT_PATH,
                                        config_archive_path=CONFIG_ARCHIVE_PATH)
         template_executor._append_replace_file(template_wrapper)
+        # template_executor.execute_template(target_path,
+        #                                    parameters_object,
+        #                                    FILE,
+        #                                    '/path/to/template',
+        #                                    save_changes=False)
 
         assert os.path.exists(target_path)
         assert '/etc/append_after_file_testfiles/file_0'\
@@ -2991,14 +2996,51 @@ AttributeError: module 'os' has no attribute 'suspicious_attribute'
                                                  'mirror': True})
 
         template_wrapper = TemplateWrapper(
-                                     target_path,
-                                     parameters_object, FILE,
-                                     '/path/to/template',
-                                     template_text='',
-                                     chroot_path=CHROOT_PATH,
-                                     config_archive_path=CONFIG_ARCHIVE_PATH)
+                                       target_path,
+                                       parameters_object, FILE,
+                                       '/path/to/template',
+                                       template_text='',
+                                       chroot_path=CHROOT_PATH,
+                                       config_archive_path=CONFIG_ARCHIVE_PATH)
+        template_executor._append_join_file(template_wrapper)
+        assert os.path.exists(target_path)
+
+    def test_using_regex_template_with_source(self):
+        target_path = join_paths(
+                              CHROOT_PATH,
+                              '/etc/append_join_file_testfiles/file_18')
+        source_path = join_paths(
+                              CHROOT_PATH,
+                              '/etc/append_join_file_testfiles/file_17')
+        template = '''<reg>root</reg>
+<text>myroot</text>'''
+        expected_output = ('#' + '-' * 79 + '\n' +
+                           '# Modified by Calculate Utilities 4.0\n' +
+                           '# Processed template files:\n' +
+                           f'# /path/to/template\n' +
+                           '#' + '-' * 79 +'\n' +
+                           "myroot:x:0:0:myroot:/myroot:/bin/bash\n" +
+                           "bin:x:1:1:bin:/bin:/bin/false\n" +
+                           "daemon:x:2:2:daemon:/sbin:/bin/false\n" +
+                           "adm:x:3:4:adm:/var/adm:/bin/false\n")
+
+        parameters_object = ParametersContainer({'package': test_package_name,
+                                                 'append': 'join',
+                                                 'source': source_path,
+                                                 'format': 'regex'})
+
+        template_wrapper = TemplateWrapper(
+                                       target_path,
+                                       parameters_object, FILE,
+                                       '/path/to/template',
+                                       template_text=template,
+                                       chroot_path=CHROOT_PATH,
+                                       config_archive_path=CONFIG_ARCHIVE_PATH)
         template_executor._append_join_file(template_wrapper)
         assert os.path.exists(target_path)
+        with open(target_path, 'r') as out_file:
+            out_text = out_file.read()
+            assert out_text == expected_output
 
     def test_to_remove_changed_testfiles(self):
         shutil.rmtree(os.path.join(CHROOT_PATH, 'etc'))
diff --git a/tests/templates/testfiles/test_executor_root/etc.backup/append_join_file_testfiles/file_17 b/tests/templates/testfiles/test_executor_root/etc.backup/append_join_file_testfiles/file_17
new file mode 100644
index 0000000..c4c01fe
--- /dev/null
+++ b/tests/templates/testfiles/test_executor_root/etc.backup/append_join_file_testfiles/file_17
@@ -0,0 +1,4 @@
+root:x:0:0:root:/root:/bin/bash
+bin:x:1:1:bin:/bin:/bin/false
+daemon:x:2:2:daemon:/sbin:/bin/false
+adm:x:3:4:adm:/var/adm:/bin/false