Seeking Help with PrestaShop 1.7 to 8.2 Migration Issues

[Abdallah Dammak]

Hello PrestaShop Community,

I’m reaching out for assistance with a challenging migration issue I’ve been facing for the past month and a half. I’ve been trying to update my client’s PrestaShop store from version 1.7 to 8.2. Since the store has a large number of products and orders, I decided to copy the website files and database to a test host to ensure everything works smoothly before making the switch.

Unfortunately, the direct update from 1.7 to 8.2 failed, and I’m unsure why. As an alternative, I decided to export all the data (products, clients, orders, etc.) from the 1.7 version using the "Export + Import + Update of Products Catalog" plugin by Smart Presta. I then created a fresh PrestaShop 8.2 installation and attempted to import the data using the same plugin.

While the import process seemed to go smoothly, I encountered two major issues:

Product images were not imported – None of the product images were transferred to the new store.

Incomplete data import – Out of 800 products, only 600 were imported, and out of 4000 clients, only 2500 were imported.

To troubleshoot, I split the import files into smaller chunks (4 files) and reattempted the import, but the results were exactly the same.

After this setback, I explored another solution: the PrestaShop Manager by EmagicOne. This desktop application offers import/export functionality and a 14-day trial. I installed it and attempted to export and import the data again, but I faced the same issues with the same numbers.

At this point, I’m exhausted and frustrated after spending so much time on this problem without success. I’m reaching out to the community for guidance. Has anyone experienced similar issues during a PrestaShop migration? Are there any recommended tools, plugins, or methods to ensure a complete and successful data transfer, including product images?

Any advice, suggestions, or solutions would be greatly appreciated. Thank you in advance for your help!

Best regards,

[WisQQ]

If you cant use prestashop autoupgrade module then you can it manually. Setup a working copy of your shop and do the upgrade there.
Before doing any update disable all non presta(some prestashop modules aswell) and overrides. Then process with the update.

If you want to do it manually then download latest ps version, extract it and replace your current files with the extracted ones (remember to do not include install directory). After updating files you will need to update database. Go to prevously said install directory>upgrade>sql and copy queries from files starting from your prestashop version and paste them into DB. Remember to change prefix inside queries so it will match yours.

Clear cache and check if everything is working. And upgrade is done.
 

[Abdallah Dammak]

hello @WisQQ,
Happy new year

Thx for the good informations.

I've tried the first solution but it didn't works  . it makes many problems in the prestashop theme. Many parts not working. So i decided to restore the backup.
Now i'm trying to go with the second solution, the manually solution.
I have a question: i didnt find the upgrade > sql where it is ? and does the queries of 1.7 aren't different to the 8.2 ?

 

[WisQQ]

8 godzin temu, Abdallah Dammak napisał:

hello @WisQQ,
Happy new year

Thx for the good informations.

I've tried the first solution but it didn't works  . it makes many problems in the prestashop theme. Many parts not working. So i decided to restore the backup.
Now i'm trying to go with the second solution, the manually solution.
I have a question: i didnt find the upgrade > sql where it is ? and does the queries of 1.7 aren't different to the 8.2 ?

 

They should be inside install directory from new version. They contain changes to database structure, so kinda important

If you have theme errors then try switching to default theme.

[Abdallah Dammak]

12 hours ago, WisQQ said:

They should be inside install directory from new version. They contain changes to database structure, so kinda important

If you have theme errors then try switching to default theme.

There is no "upgrade" directory inside the "install" directory.😢 

[WisQQ]

2 godziny temu, Abdallah Dammak napisał:

There is no "upgrade" directory inside the "install" directory.😢 

You are right. I can see that they moved upgrade directory into autoupgrade module, so you have to grab it from there.

[Abdallah Dammak]

1 hour ago, WisQQ said:

You are right. I can see that they moved upgrade directory into autoupgrade module, so you have to grab it from there.

So you mean i need to download auto upgrade model from prestashop addons website ? then what file or directory should i grap ?

[WisQQ]

2 godziny temu, Abdallah Dammak napisał:

So you mean i need to download auto upgrade model from prestashop addons website ? then what file or directory should i grap ?

if you have latest version of upgrade module in your current shop, there should be upgrade directory with all queries for ps8 upgrade.