Moving joomla form 2.5.28 to 3.x

-- HikaShop version -- : 2.4.0
-- Joomla version -- : 2.5.28
-- PHP version -- : 5.48.38

Hello,

I installed and used hikashop starter 2.4.0 on my version of Joomla 2.5.25
I plan to migrate my version of Joomla 5.2.28 to version 3.x.
I would like to know what are the implications for your component
of such a migration.
What do you recommend to do for your component prior to
migration joomla?
Should I migrate your component before or after migrating
joomla.
Y is there any compatibility or incompatibility?

Any other information will be welcome

thank you

Hi,

We recommend to migrate Joomla before HikaShop, so this way once you have migrated all the users and usergroups you just have to export and import all the HikaShop tables from the 2.5.x to 3.x.

HI,
And how can I to migrate Joomla without migrating Hikashop?
I upgraded to J3.x step by step and always I got an error in migration.
Any help will be welcome.

Thank you in advance

Hi again,
this is the error I got:

Error: 1091 Can't DROP 'usertype'; check that column/key exists SQL=ALTER TABLE `xxx_users` DROP KEY `usertype`;