upgrading from magento 1.9 to 2.3, process - dealing with extensions

[darrenplaydace]

Hi

this may not be the correct place for this post, sorry I was unable to find other that related.  I'm not a Magento expert. Appreciate some guidance on correct steps to take,  I've read the support docs but still remaining unclear. thanks

I'm in the process of upgrading Magento 1.9 to 2.3,  I'm unsure fully how to deal with the extensions before using the data migration tool.    

What do i do with any unused but installed extensions? how do i identify these?

Will it cause issues if the corresponding extension are not installed on version 2 when using the data migration tool?

What happens to the database data for extensions not present?

thanks

[amitsamsukha]

@darrenplaydace ,

you need to list the extensions. 

get their magento2 version 

install Magento2 Fresh with the extensions 

then start migration 

check below extension for data migration : 

https://www.ubertheme.com/magento-extensions-2-x/magento-2-data-migration-pro/

Note: you may have some customizations & custom extensions that you need to implement from scratch. 

[darrenplaydace]

Hi Amitsamsukha

Thanks for the reply,  I'm a bit confused with the extensions, there seems a lot installed but most likely not used.   The plan was for a fresh rebuild on version 2 I just want the legacy sales data, products, orders, customers. to move.  I planned on a new theme and replacement extensions. There are no customisations.  I'm happy to transfer txt from custom pages.

I'm using the adobe migration tool, I wanted to know if I need to replicate the expected extensions over on Magento 2 before using the data migration tool do it can map any data from these (for example payment modules)

thanks

[amitsamsukha · Accepted solution]

@darrenplaydace 

there are some XML files in which you can map the data from extensions 

if you plan to use a fresh Magento2 website its good  

just import the Catalog, Customers & Sales. 

[darrenplaydace]

@amitsamsukha 

Thanks that's good to now,  any tips, help docs on mapping for those sections specifically?