diff --git a/lib/python/qmk/cli/new/keymap.py b/lib/python/qmk/cli/new/keymap.py
index d4339bc9ef0..f1df05636ce 100755
--- a/lib/python/qmk/cli/new/keymap.py
+++ b/lib/python/qmk/cli/new/keymap.py
@@ -1,5 +1,6 @@
 """This script automates the copying of the default keymap into your own keymap.
 """
+import re
 import shutil
 
 from milc import cli
@@ -13,6 +14,13 @@ from qmk.keyboard import keyboard_completer, keyboard_folder
 from qmk.userspace import UserspaceDefs
 
 
+def validate_keymap_name(name):
+    """Returns True if the given keymap name contains only a-z, 0-9 and underscore characters.
+    """
+    regex = re.compile(r'^[a-zA-Z0-9][a-zA-Z0-9_]+$')
+    return bool(regex.match(name))
+
+
 def prompt_keyboard():
     prompt = """{fg_yellow}Select Keyboard{style_reset_all}
 If you`re unsure you can view a full list of supported keyboards with {fg_yellow}qmk list-keyboards{style_reset_all}.
@@ -60,6 +68,10 @@ def new_keymap(cli):
         cli.log.error(f'Default keymap {{fg_cyan}}{keymap_path_default}{{fg_reset}} does not exist!')
         return False
 
+    if not validate_keymap_name(user_name):
+        cli.log.error('Keymap names must contain only {fg_cyan}a-z{fg_reset}, {fg_cyan}0-9{fg_reset} and {fg_cyan}_{fg_reset}! Please choose a different name.')
+        return False
+
     if keymap_path_new.exists():
         cli.log.error(f'Keymap {{fg_cyan}}{user_name}{{fg_reset}} already exists! Please choose a different name.')
         return False
diff --git a/lib/python/qmk/cli/via2json.py b/lib/python/qmk/cli/via2json.py
index 73c9a61b3d3..537e1026406 100755
--- a/lib/python/qmk/cli/via2json.py
+++ b/lib/python/qmk/cli/via2json.py
@@ -29,6 +29,7 @@ def _convert_macros(via_macros):
     if len(via_macros) == 0:
         return list()
     split_regex = re.compile(r'(}\,)|(\,{)')
+    macro_group_regex = re.compile(r'({.+?})')
     macros = list()
     for via_macro in via_macros:
         # Split VIA macro to its elements
@@ -38,13 +39,28 @@ def _convert_macros(via_macros):
         macro_data = list()
         for m in macro:
             if '{' in m or '}' in m:
-                # Found keycode(s)
-                keycodes = m.split(',')
-                # Remove whitespaces and curly braces from around keycodes
-                keycodes = list(map(lambda s: s.strip(' {}'), keycodes))
-                # Remove the KC prefix
-                keycodes = list(map(lambda s: s.replace('KC_', ''), keycodes))
-                macro_data.append({"action": "tap", "keycodes": keycodes})
+                # Split macro groups
+                macro_groups = macro_group_regex.findall(m)
+                for macro_group in macro_groups:
+                    # Remove whitespaces and curly braces from around group
+                    macro_group = macro_group.strip(' {}')
+
+                    macro_action = 'tap'
+                    macro_keycodes = []
+
+                    if macro_group[0] == '+':
+                        macro_action = 'down'
+                        macro_keycodes.append(macro_group[1:])
+                    elif macro_group[0] == '-':
+                        macro_action = 'up'
+                        macro_keycodes.append(macro_group[1:])
+                    else:
+                        macro_keycodes.extend(macro_group.split(',') if ',' in macro_group else [macro_group])
+
+                    # Remove the KC prefixes
+                    macro_keycodes = list(map(lambda s: s.replace('KC_', ''), macro_keycodes))
+
+                    macro_data.append({"action": macro_action, "keycodes": macro_keycodes})
             else:
                 # Found text
                 macro_data.append(m)
@@ -54,13 +70,13 @@ def _convert_macros(via_macros):
 
 
 def _fix_macro_keys(keymap_data):
-    macro_no = re.compile(r'MACRO0?([0-9]{1,2})')
+    macro_no = re.compile(r'MACRO0?\(([0-9]{1,2})\)')
     for i in range(0, len(keymap_data)):
         for j in range(0, len(keymap_data[i])):
             kc = keymap_data[i][j]
             m = macro_no.match(kc)
             if m:
-                keymap_data[i][j] = f'MACRO_{m.group(1)}'
+                keymap_data[i][j] = f'MC_{m.group(1)}'
     return keymap_data