GitHub user dave-csc edited a comment on the discussion: Need help for a broken 
pipeline... probably after a Hop update

> Have you tried specifying a target file name for the pipeline after injection 
> (`Options` -> `Option target file (hpl after injection)`). Do you see any 
> issues in the data grid if you uncheck the `Run resulting pipeline` and open 
> the generated pipeline after the injection?

Hi @bamaer,

I'll explain the path question below (I exported directly my pipelines, for 
your tests you need to tweak the paths in the "testing" and "main" pipeline of 
course), first I tried to do this test and a significant difference occurred in 
the resulting debug pipeline:
- with Hop 2.10 the **Data grid** transform is correctly populated, both in the 
"Meta" and the "Data" sections
- with Hop 2.12 only the "Meta" section is populated, the "Data" section 
contains 5 empty rows (as if their contents have not been injected)

> First thing I noticed is that your MDI transform points to 
> `${HOP_CONFIG_FOLDER}/projects/_root/datanorm/_inj-anti-normalizer.hpl` as 
> the child pipeline. As the name implies, `${HOP_CONFIG_FOLDER}` should be a 
> folder to store configuration. Using it for project files is not what I would 
> consider a best practice, if not just tricky.
 
The `${HOP_CONFIG_FOLDER}` has been moved away from its default location, so 
the configuration used is the same for all the installed versions of Hop. 
However, in the default location a `project` subfolder indeed exists, and seems 
to be intended to store project files (`default` and `samples` are there): so 
why it should be risky to keep a similar one off the default location?

Thanks for your support

GitHub link: 
https://github.com/apache/hop/discussions/5128#discussioncomment-12724370

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