diff --git a/api/__init__.py b/api/__init__.py
index 6681eaf..748504c 100644
--- a/api/__init__.py
+++ b/api/__init__.py
@@ -2,7 +2,7 @@ from .project import list_project, have_project, create_project, delete_project
 from .project import is_project_open, get_project_open_count, open_project, close_project
 from .project import copy_project
 
-from .parser import read_inp, dump_inp, export_inp
+from .parser import read_inp, dump_inp, import_inp, export_inp
 
 from .database import API_ADD, API_UPDATE, API_DELETE
 from .database import ChangeSet
diff --git a/api/parser.py b/api/parser.py
index 096e6dc..e1d4324 100644
--- a/api/parser.py
+++ b/api/parser.py
@@ -73,9 +73,40 @@ def _parse_inp(inp: str) -> dict[str, list[str]]:
     return file
 
 
-def _read_inp(inp: str) -> ChangeSet:
-    file = _parse_inp(inp)
+def _parse_cs(cs: ChangeSet) -> dict[str, list[str]]:
+    file: dict[str, list[str]] = {}
+    for s in section_name:
+        file[s] = []
 
+    section = ''
+
+    for line in str(cs.operations[0]['inp']).split('\n'):
+        line = line.strip()
+        if line == '':
+             # skip empty line for control and rule
+            if section == 'CONTROLS' or section == 'RULES':
+                pass
+            else:
+                section = ''
+            continue
+
+        if line.startswith('['):
+            is_section = False
+            for s in section_name:
+                if line.startswith(f'[{s}'):
+                    section = s
+                    is_section = True
+                    break
+            if is_section:
+                continue
+
+        if section != '':
+            file[section].append(line)
+
+    return file
+
+
+def _read_inp(file: dict[str, list[str]]) -> ChangeSet:
     file_cs: dict[str, ChangeSet] = {}
     for s in section_name:
         file_cs[s] = ChangeSet()
@@ -227,10 +258,38 @@ def read_inp(project: str, inp: str):
     create_project(project)
     open_project(project)
 
-    execute_batch_commands(project, _read_inp(inp))
+    file = _parse_inp(inp)
+    cs = _read_inp(file)
+
+    execute_batch_commands(project, cs)
     op = get_current_operation(project)
     set_restore_operation(project, op)
 
+    close_project(project)
+
+
+def import_inp(project: str, cs: ChangeSet) -> ChangeSet:
+    if is_project_open(project):
+       close_project(project)
+
+    if have_project(project):
+       delete_project(project)
+
+    create_project(project)
+    open_project(project)
+
+    file = _parse_cs(cs)
+    new_cs = _read_inp(file)
+
+    success_cs = execute_batch_commands(project, new_cs)
+    op = get_current_operation(project)
+    set_restore_operation(project, op)
+
+    close_project(project)
+
+    # return ?
+    return success_cs
+
 
 def dump_inp(project: str, inp: str):
     if not have_project(project):
diff --git a/tjnetwork.py b/tjnetwork.py
index b746f82..4f7e4ba 100644
--- a/tjnetwork.py
+++ b/tjnetwork.py
@@ -142,6 +142,9 @@ def read_inp(name: str, inp: str) -> None:
 def dump_inp(name: str, inp: str) -> None:
     return api.dump_inp(name, inp)
 
+def import_inp(name: str, cs: ChangeSet) -> ChangeSet:
+    return api.import_inp(name, cs)
+
 def export_inp(name: str) -> ChangeSet:
     return api.export_inp(name)