diff --git a/docs/release-notes/version-3.0.md b/docs/release-notes/version-3.0.md
index ddf23432a..1e7a3022d 100644
--- a/docs/release-notes/version-3.0.md
+++ b/docs/release-notes/version-3.0.md
@@ -13,6 +13,7 @@
 * [#7179](https://github.com/netbox-community/netbox/issues/7179) - Prevent obscuring "connect" pop-up for interfaces under device view
 * [#7188](https://github.com/netbox-community/netbox/issues/7188) - Fix issue where select fields with `null_option` did not render or send the null option
 * [#7189](https://github.com/netbox-community/netbox/issues/7189) - Set connection factory for django-redis when Sentinel is in use
+* [#7191](https://github.com/netbox-community/netbox/issues/7191) - Fix issue where API-backed multi-select elements cleared selected options when adding new options
 * [#7193](https://github.com/netbox-community/netbox/issues/7193) - Fix prefix (flat) template issue when viewing child prefixes with prefixes available
 * [#7205](https://github.com/netbox-community/netbox/issues/7205) - Fix issue where selected fields with `null_option` set were not added to applied filters
 * [#7209](https://github.com/netbox-community/netbox/issues/7209) - Allow unlimited API results when `MAX_PAGE_SIZE` is disabled
diff --git a/netbox/project-static/dist/netbox.js b/netbox/project-static/dist/netbox.js
index e4d0f8d8c..a60f4eaa8 100644
Binary files a/netbox/project-static/dist/netbox.js and b/netbox/project-static/dist/netbox.js differ
diff --git a/netbox/project-static/dist/netbox.js.map b/netbox/project-static/dist/netbox.js.map
index 10b2b5ae5..984391b01 100644
Binary files a/netbox/project-static/dist/netbox.js.map and b/netbox/project-static/dist/netbox.js.map differ
diff --git a/netbox/project-static/src/select/api/apiSelect.ts b/netbox/project-static/src/select/api/apiSelect.ts
index 690608113..6d83daaac 100644
--- a/netbox/project-static/src/select/api/apiSelect.ts
+++ b/netbox/project-static/src/select/api/apiSelect.ts
@@ -5,7 +5,7 @@ import SlimSelect from 'slim-select';
 import { createToast } from '../../bs';
 import { hasUrl, hasExclusions, isTrigger } from '../util';
 import { DynamicParamsMap } from './dynamicParams';
-import { isStaticParams } from './types';
+import { isStaticParams, isOption } from './types';
 import {
   hasMore,
   isTruthy,
@@ -156,11 +156,6 @@ export class APISelect {
    */
   private preSorted: boolean = false;
 
-  /**
-   * This instance's available options.
-   */
-  private _options: Option[] = [EMPTY_PLACEHOLDER];
-
   /**
    * Array of options values which should be considered disabled or static.
    */
@@ -295,7 +290,7 @@ export class APISelect {
    * This instance's available options.
    */
   private get options(): Option[] {
-    return this._options;
+    return this.slim.data.data.filter(isOption);
   }
 
   /**
@@ -329,7 +324,6 @@ export class APISelect {
       // If there is not a placeholder, add one to the front.
       deduplicated.unshift(this.emptyOption);
     }
-    this._options = deduplicated;
     this.slim.setData(deduplicated);
   }
 
@@ -381,7 +375,12 @@ export class APISelect {
     const fetcher = debounce((event: Event) => this.handleSearch(event), 300, false);
 
     // Query the API when the input value changes or a value is pasted.
-    this.slim.slim.search.input.addEventListener('keyup', event => fetcher(event));
+    this.slim.slim.search.input.addEventListener('keyup', event => {
+      // Only search when necessary keys are pressed.
+      if (!event.key.match(/^(Arrow|Enter|Tab).*/)) {
+        return fetcher(event);
+      }
+    });
     this.slim.slim.search.input.addEventListener('paste', event => fetcher(event));
 
     // Watch every scroll event to determine if the scroll position is at bottom.
@@ -470,7 +469,7 @@ export class APISelect {
     for (const result of data.results) {
       let text = result.display;
 
-      if (typeof result._depth === 'number') {
+      if (typeof result._depth === 'number' && result._depth > 0) {
         // If the object has a `_depth` property, indent its display text.
         if (!this.preSorted) {
           this.preSorted = true;
diff --git a/netbox/project-static/src/select/api/types.ts b/netbox/project-static/src/select/api/types.ts
index a6ab12794..8179f4a3a 100644
--- a/netbox/project-static/src/select/api/types.ts
+++ b/netbox/project-static/src/select/api/types.ts
@@ -1,4 +1,5 @@
 import type { Stringifiable } from 'query-string';
+import type { Option, Optgroup } from 'slim-select/dist/data';
 
 /**
  * Map of string keys to primitive array values accepted by `query-string`. Keys are used as
@@ -187,3 +188,12 @@ export function isStaticParams(value: unknown): value is DataStaticParam[] {
   }
   return false;
 }
+
+/**
+ * Type guard to determine if a SlimSelect `dataObject` is an `Option`.
+ *
+ * @param data Option or Option Group
+ */
+export function isOption(data: Option | Optgroup): data is Option {
+  return !('options' in data);
+}