[Bug]: Incorrect calculating of WIP for a project

Describe the issue

When WIP is used for a project with the WIP method cost value, the calculation of the method does not show the correct WIP amount and the correct percentage of completion. In addition is the project planning line always getting the line type “both budget and billable” no matter what type is used in the project journal lines. With this is the total of the project planning line for the WIP calculation adding up the project planning lines instead of leaving the budget and calculating the WIP based on the budget.
Example:
Project with the project task type posting and the WIP method cost value

The project has a project line with line type budget and quantity 10 hours.

To record the usage of the project the project journal is used. The line type is billable and quantity is 2 hours.

Once the entry of the project journal is posted, the project planning line gets the line type both budget and billable and the base for the calculation of the percentage of completion is changing from 10 hours to 12 hours. This is incorrect, since the base should always be the original amount of the budget.

Expected behavior

The project line for the WIP calculation should not add up. The base for the calculation and the completion should always be the amount of the budget. In above case the expected value for the %Completed should be 20%.
The applied costs and recognized costs of the above example should be 154.

Steps to reproduce

1. Create a project with a project task and project task type Posting and WIP method cost value
2. Create project planning lines with line type budget
3. Open project journals and create a line with line type billable and post the line
4. Create a sales invoice and post the invoice
5. Calculate WIP

Additional context

No response

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• I will provide a fix for a bug

Reproduce the issue through the listed Business Central project, project journal, sales invoice, and WIP calculation steps. Trace how billable journal usage changes the project planning line and WIP percentage base; done means the budget remains the calculation base, completion is 20% in the example, and applied and recognized costs are 154.