Hi,
In Odoo, analytic distributions must be imported using the analytic account’s external ID or database ID, not its name. When you tried {"Al Khan G + 15 - 211": 100}, Odoo couldn’t match the name, so the distribution was left empty. To fix this, you should first get the external ID of the analytic account (via Settings → Technical → External Identifiers), then use that in the JSON field, for example {"analytic_al_khan_211": 100}. If you need to split across multiple accounts, you can add more keys and percentages, like {"analytic_al_khan_211": 70, "analytic_other_project": 30}. This way, the analytic distribution will import correctly.
For more information, refer to the following
OCA Module
* https://odoo-community.org/groups/contributors-15/contributors-1936163
Solved Forum
* https://www.odoo.com/es/forum/ayuda-1/analytic-distribution-analytic-account-import-journal-entry-via-excel-236457
* https://www.odoo.com/es/forum/ayuda-1/v16-how-do-i-import-journal-entries-with-an-analytic-account-distribution-226866
Hope it helps