# Why do models become displaced after replacement/update?

> Similar question:
>
> \- Why does the brush plant produce an offset after updating/replacing the model?

## Solution:

1. **Import the model directly in D5** : <mark style="background-color:purple;">After importing the model, click the "Sync Coordinates" immediately.</mark> Then, if you update the model, even the overall range (bounding box) of the model changes, the model will remain in place.&#x20;
2. **Use D5 Workflow Plugin** : If the D5 converter is used in the sync workflow, there will be no displacement issues.

<div align="left"><figure><img src="https://3611830798-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjbN1iGmN_HBnj_fyU9%2Fuploads%2FkpverTMNRyFxSccfrvx6%2F16C1017C-F9F4-4391-81A5-168973A9A6EF.png?alt=media&#x26;token=5d500df3-edab-4276-9d0f-011a796683aa" alt=""><figcaption></figcaption></figure></div>

## The reason for the issue:

The coordinates of the model that is imported directly into D5 is set to the default point A at the bottom center of the model.&#x20;

If the overall range(bounding box) of the model is changed after replacement, the position of the coordinate axis will be recalculated and changed to point B, which can cause displacement issues.

<mark style="background-color:purple;">By clicking the "Sync Coordinates" after selecting the model, the model will be restored to its absolute modeling coordinate position.</mark>

{% hint style="info" %}
**Note:**

**If the imported model is a .d5a file with group structures**, please <mark style="background-color:purple;">perform the ‘Sync Coordinates’ after the first import and after replacing the model, respectively</mark>.

<img src="https://3611830798-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjbN1iGmN_HBnj_fyU9%2Fuploads%2FeroV2ZmCLghvmncs1KM4%2Fsync2_compressed.gif?alt=media&#x26;token=c86917a6-4299-42a8-9f5a-160e19cb13f1" alt="" data-size="original">
{% endhint %}

***

**e.g.**

(As shown in the figure below) if you have three models, a square, a circle, and a rectangle, and the coordinate origin of the models is at point A (D5's coordinate axis is set to the bottom center of the model by default).

<figure><img src="https://3611830798-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjbN1iGmN_HBnj_fyU9%2Fuploads%2F8ZD0JQ5JwcflCDXFAlM0%2Fimage.png?alt=media&#x26;token=3d58f1cd-36ed-4fe6-8dcb-49b667d49619" alt=""><figcaption><p>If we delete the rectangle, the coordinate origin of the model will change from point A to point B.</p></figcaption></figure>

<figure><img src="https://3611830798-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjbN1iGmN_HBnj_fyU9%2Fuploads%2F0eazxzTrsN8JCfAyMtwM%2Fimage.png?alt=media&#x26;token=80d93b1d-e158-411d-b83b-f7b5de5e7104" alt=""><figcaption><p>If we align the coordinate axis at this time, the models will move.</p></figcaption></figure>

***

This is why the model stays in place even if the bounding box changes.

<div align="center"><figure><img src="https://3611830798-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjbN1iGmN_HBnj_fyU9%2Fuploads%2Fywp4YBQTZkYo45xduqKE%2Fimage2.png?alt=media&#x26;token=672acd77-8a0d-4005-b3e6-5a77ed8fa7dc" alt=""><figcaption><p>By using the "Sync Coordinates", the model will be moved to the position of the coordinates in the modeling software.</p></figcaption></figure></div>

<div align="center"><figure><img src="https://3611830798-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjbN1iGmN_HBnj_fyU9%2Fuploads%2FBtZfo8DbSAfy1y0jkeCZ%2Fimage3.png?alt=media&#x26;token=b8fd85c6-bcd3-4922-9c52-328a33753e48" alt=""><figcaption><p>If you make changes to the model at this time (with the little tiger as the reference object), the position of the model will not be displaced anymore!</p></figcaption></figure></div>


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