ui: clarify the MAC address switch in the VM import form

ui/public/locales/en.json

@@ -1232,6 +1232,7 @@
 "label.fwdeviceid": "ID",
 "label.fwdevicestate": "Status",
 "label.gateway": "Gateway",
+"label.generate.new.mac.if.in.use": "Generate new MAC address if already in use",
 "label.global": "Global",
 "label.global.settings": "Global Settings",
 "label.globo.dns": "GloboDNS",
@@ -3846,6 +3847,7 @@
 "message.failed.to.remove": "Failed to remove",
 "message.forgot.password.success": "An email has been sent to your email address with instructions on how to reset your password.",
 "message.generate.keys": "Please confirm that you would like to generate new API/Secret keys for this User.",
+"message.generate.new.mac.if.in.use": "If a NIC's MAC address is already used by another NIC on the selected network, CloudStack assigns a new MAC address to the imported NIC and the import continues. When this is off, the import fails instead. Guest network settings or licenses tied to the old MAC address may stop working.",
 "message.global.setting.updated": "Global Setting updated successfully.",
 "message.global.setting.update.failed": "Failed to update Global Setting.",
 "message.chart.statistic.info": "The shown charts are self-adjustable, that means, if the value gets close to the limit or overpass it, it will grow to adjust the shown value",

ui/src/views/tools/ImportUnmanagedInstance.vue

@@ -365,8 +365,8 @@
                     <a-form-item name="forced" ref="forced">
                       <template #label>
                         <tooltip-label
-                          :title="$t('label.allow.duplicate.macaddresses')"
-                          :tooltip="apiParams.forced.description"/>
+                          :title="$t('label.generate.new.mac.if.in.use')"
+                          :tooltip="$t('message.generate.new.mac.if.in.use')"/>
                       </template>
                       <a-switch v-model:checked="form.forced" @change="val => { switches.forced = val }" />
                     </a-form-item>
@@ -422,12 +422,12 @@
                     <a-switch v-model:checked="form.migrateallowed" @change="val => { switches.migrateAllowed = val }" />
                   </a-form-item>
                 </a-col>
-                <a-col>
+                <a-col v-if="!isExternalImport && !isDiskImport">
                   <a-form-item name="forced" ref="forced">
                     <template #label>
                       <tooltip-label
-                        :title="$t('label.forced')"
-                        :tooltip="apiParams.forced.description"/>
+                        :title="$t('label.generate.new.mac.if.in.use')"
+                        :tooltip="$t('message.generate.new.mac.if.in.use')"/>
                     </template>
                     <a-switch v-model:checked="form.forced" @change="val => { switches.forced = val }" />
                   </a-form-item>