diff --git a/netbox/dcim/forms/model_forms.py b/netbox/dcim/forms/model_forms.py
index 195f922ea..67cd58ad1 100644
--- a/netbox/dcim/forms/model_forms.py
+++ b/netbox/dcim/forms/model_forms.py
@@ -1617,6 +1617,7 @@ class FrontPortForm(ModularDeviceComponentForm):
             ]
 
     def clean(self):
+        super().clean()
 
         # Count of selected rear port & position pairs much match the assigned number of positions
         if len(self.cleaned_data['rear_ports']) != self.cleaned_data['positions']:
@@ -1652,7 +1653,7 @@ class FrontPortForm(ModularDeviceComponentForm):
         """
         occupied_rear_port_positions = [
             f'{assignment.rear_port_id}:{assignment.rear_port_position}'
-            for assignment in PortAssignment.objects.filter(front_port__device=device).exclude(front_port=front_port)
+            for assignment in PortAssignment.objects.filter(front_port__device=device).exclude(front_port=front_port.pk)
         ]
 
         choices = []
diff --git a/netbox/dcim/forms/object_create.py b/netbox/dcim/forms/object_create.py
index aa14ed9cc..028ab6c3c 100644
--- a/netbox/dcim/forms/object_create.py
+++ b/netbox/dcim/forms/object_create.py
@@ -269,58 +269,30 @@ class FrontPortCreateForm(ComponentCreateForm, model_forms.FrontPortForm):
             }
         )
     )
-    rear_port = forms.MultipleChoiceField(
-        choices=[],
-        label=_('Rear ports'),
-        help_text=_('Select one rear port assignment for each front port being created.'),
-        widget=forms.SelectMultiple(attrs={'size': 6})
-    )
 
     # Override fieldsets from FrontPortForm to omit rear_port_position
     fieldsets = (
         FieldSet(
-            'device', 'module', 'name', 'label', 'type', 'color', 'rear_port', 'mark_connected', 'description', 'tags',
+            'device', 'module', 'name', 'label', 'type', 'color', 'positions', 'rear_ports', 'mark_connected',
+            'description', 'tags',
         ),
     )
 
-    class Meta(model_forms.FrontPortForm.Meta):
-        exclude = ('name', 'label', 'positions')
-
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-
-        if device_id := self.data.get('device') or self.initial.get('device'):
-            device = Device.objects.get(pk=device_id)
-        else:
-            return
-
-        # Determine which rear port positions are occupied. These will be excluded from the list of available
-        # mappings.
-        occupied_port_positions = [
-            (front_port.rear_port_id, front_port.rear_port_position)
-            for front_port in device.frontports.all()
+    class Meta:
+        model = FrontPort
+        fields = [
+            'device', 'module', 'type', 'color', 'positions', 'mark_connected', 'description', 'owner', 'tags',
         ]
 
-        # Populate rear port choices
-        choices = []
-        rear_ports = RearPort.objects.filter(device=device)
-        for rear_port in rear_ports:
-            for i in range(1, rear_port.positions + 1):
-                if (rear_port.pk, i) not in occupied_port_positions:
-                    choices.append(
-                        ('{}:{}'.format(rear_port.pk, i), '{}:{}'.format(rear_port.name, i))
-                    )
-        self.fields['rear_port'].choices = choices
-
     def clean(self):
-        super().clean()
+        super(NetBoxModelForm, self).clean()
 
         # Check that the number of FrontPorts to be created matches the selected number of RearPort positions
         frontport_count = len(self.cleaned_data['name'])
-        rearport_count = len(self.cleaned_data['rear_port'])
+        rearport_count = len(self.cleaned_data['rear_ports'])
         if frontport_count != rearport_count:
             raise forms.ValidationError({
-                'rear_port': _(
+                'rear_ports': _(
                     "The number of front ports to be created ({frontport_count}) must match the selected number of "
                     "rear port positions ({rearport_count})."
                 ).format(
@@ -330,13 +302,10 @@ class FrontPortCreateForm(ComponentCreateForm, model_forms.FrontPortForm):
             })
 
     def get_iterative_data(self, iteration):
-
-        # Assign rear port and position from selected set
-        rear_port, position = self.cleaned_data['rear_port'][iteration].split(':')
-
+        positions = self.cleaned_data['positions']
+        offset = positions * iteration
         return {
-            'rear_port': int(rear_port),
-            'rear_port_position': int(position),
+            'rear_ports': self.cleaned_data['rear_ports'][offset:offset + positions]
         }
 
 
diff --git a/netbox/netbox/views/generic/object_views.py b/netbox/netbox/views/generic/object_views.py
index 88a3456f7..818cea610 100644
--- a/netbox/netbox/views/generic/object_views.py
+++ b/netbox/netbox/views/generic/object_views.py
@@ -1,6 +1,5 @@
 import logging
 from collections import defaultdict
-from copy import deepcopy
 
 from django.contrib import messages
 from django.db import router, transaction
@@ -563,7 +562,7 @@ class ComponentCreateView(GetReturnURLMixin, BaseObjectView):
 
         if form.is_valid():
             new_components = []
-            data = deepcopy(request.POST)
+            data = request.POST.copy()
             pattern_count = len(form.cleaned_data[self.form.replication_fields[0]])
 
             for i in range(pattern_count):
@@ -572,7 +571,8 @@ class ComponentCreateView(GetReturnURLMixin, BaseObjectView):
                         data[field_name] = form.cleaned_data[field_name][i]
 
                 if hasattr(form, 'get_iterative_data'):
-                    data.update(form.get_iterative_data(i))
+                    for k, v in form.get_iterative_data(i).items():
+                        data.setlist(k, v)
 
                 component_form = self.model_form(data)