Magento cannot handle it's own products export when importing to different installations

[ioweb-gr]

Preconditions (*)

Magento 2.4
Two Magento instances: the first with Sample Data, the second without it

Case 1

Steps to reproduce (*)

1. Use a standard installation with sample data deployed.
2. Go to System -> Export and export all products.
3. Go to a second installation without sample data deployed.
4. Go to System -> Import and use the previously exported csv file.

Expected result (*)

I would expect the products to be imported to the new installation and the export function to provide a working csv file that can be used in any installation. In most systems that's the case except for Magento, so I think this could be considered more of a bug than a feature.
Products.zip

Actual result (*)

• First of all I get errors about the missing configurable attribute color and size.
• After creating or adding those attributes to the attribute set I receive an error about the missing options for those.
• After creating the missing options for the configurable attributes in the backend, the products are created but the configurable products are missing their associations.
  
  Case 2

Steps to reproduce (*)

1. Create a csv file for mass import some new products with attribute options
2. Use a second installation without Sample Data
3. Go to System -> Import and use the previously created csv file.

Additional information
Some cases I could encounter for this scenario. I would like to mass import some new products in the system in the same installation so I take out an export of the current situation and clean up all lines.

I then append new lines similar to the ones that were exported for the new products with attribute options that I don't know if they currently exist in the system.

Expected result (*)

The new attribute options are appended to the currently existing attributes.

Actual result (*)

• The system complains about the missing attribute options
• After creating the missing options for the configurable attributes in the backend, the products are created but the configurable products are missing their associations.

[m2-assistant]

Hi @ioweb-gr. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento give me 2.4-develop instance - upcoming 2.4.x release

For more details, please, review the Magento Contributor Assistant documentation.

@ioweb-gr do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
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[ioweb-gr]

@magento give me 2.4-develop instance

[magento-engcom-team]

Hi @ioweb-gr. Thank you for your request. I'm working on Magento 2.4-develop instance for you

[magento-engcom-team]

Hi @ioweb-gr, here is your Magento instance.
Admin access: https://i-26891-2-4-develop.instances.magento-community.engineering/admin_89d2
Login: 89abd026 Password: bdc512fc2d57
Instance will be terminated in up to 3 hours.

[ioweb-gr]

There's nothing different in the upcoming 2.4 version to handle new attribute options. Same behaviour. Trying case 1

In this case size does not exist so it fails the validation but color exists and is missing only the options.

[magento-engcom-team]

Hi @koushikch7. Thank you for your request. I'm working on Magento 2.3.4 instance for you

[magento-engcom-team]

Hi @koushikch7, here is your Magento instance.
Admin access: https://i-26891-2-3-4.instances.magento-community.engineering/admin_c04f
Login: 379d62f2 Password: 4eec0e06dc6d
Instance will be terminated in up to 3 hours.

[m2-assistant]

Hi @engcom-Lima. Thank you for working on this issue.
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