Hello.
No, you cannot use 1.3.4 database directly with 1.4.3
If you want to move to 1.4.3, the safer option is to export your products from 1.3.x and then import them back into a fresh 1.4.3 installation.
If you still have your 1.3.4 files and database, another option is to hire professionals to perform the upgrade for you. In that case, they may be able to migrate the store properly and preserve most of your existing data and setup.
No, you cannot use 1.3.4 database directly with 1.4.3
If you want to move to 1.4.3, the safer option is to export your products from 1.3.x and then import them back into a fresh 1.4.3 installation.
If you still have your 1.3.4 files and database, another option is to hire professionals to perform the upgrade for you. In that case, they may be able to migrate the store properly and preserve most of your existing data and setup.
