# Can device importer be used to overwrite existing device configs?

**URL:** <https://www.thethingsnetwork.org/forum/t/can-device-importer-be-used-to-overwrite-existing-device-configs/49442>\
**Category:** End Devices (Nodes)\
**Tags:** maintenance\
**Created:** [July 5, 2021, 4:05am UTC](https://www.thethingsnetwork.org/forum/t/can-device-importer-be-used-to-overwrite-existing-device-configs/49442 "2021-07-05T04:05:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![zacn](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/zacn/32/35697_2.png) [@zacn](https://www.thethingsnetwork.org/forum/u/zacn)\
**Post date:** [July 5, 2021, 4:05am UTC](https://www.thethingsnetwork.org/forum/t/can-device-importer-be-used-to-overwrite-existing-device-configs/49442/1 "2021-07-05T04:05:35Z")

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Hi. Was wondering if the device importer for v3 will work if my application contains a device with same ID? If so will it replace the device’s config with the imported one? Avoiding testing this myself as i don’t want half the configs to upload and half not to since i’m replacing configs for many lights and also uploading some new ones. Thanks.