Sync script does not reliably sync data

#### Issue description

The data-synchronisation script does not seem to sync data reliably.

#### Steps to reproduce the issue

1. Look at the number of projects in Django Admin, after sync script has run during the night

#### What's the expected result?

- It should be the same number

#### What's the actual result?

- There are currently 286 projects in fixmyplatform and 276 in fixmyplatform-develop
- Also, individual project data is not congruent (e.g. project 340)

#### Additional details / screenshot

- ![Screenshot]()
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Locate the data-synchronisation script and review how it populates the Django Admin project data. Compare the records for project 340 and the total project counts in fixmyplatform and fixmyplatform-develop. Done means the nightly sync produces matching project counts and congruent individual project data.

Written by the indexing model from the issue text.