Manually drawn chart line vanishes after uploading metastock data

good morning
I plot indicators & signals for my trading system by using the "Apply" button in the AFL formula editor. After plotting these indicators, I also draw lines manually in the chart. After drawing lines I can open & reopen AB as many times as I want and the line is still there. Yet these manually drawn lines vanish after I upload daily new metastock EOD datas (indices & stocks) & AFTER pressing the "Apply" button in the AFL formula editor in order to actualize indicators & signals. My understanding is that that these manually drawn lines for specific securities (in these case.H24.DE) should remain there until I delete them regardless if I up-date with metastock data.
Complete re-installation didn't solve the problem.
I'm working with bootcamp.
thank you for ideas.

Make sure that you don't have VirtualStore folder like this:

C:\Users\*current logged in user*\AppData\Local\VirtualStore\Program Files (x86)\AmiBroker

If such folder exists, it means that your AmiBroker was NOT properly installed in first place. Existence of such folder means that writes are redirected by Windows to wrong place (VirtualStore) and they may cause all kinds of troubles including inability to save new content.

To fix that you need to:

  1. Delete Virtual Store folder
    C:\Users\*current logged in user*\AppData\Local\VirtualStore\Program Files (x86)\AmiBroker

  2. Run FULL SETUP of AmiBroker

i re-installed everything fresh. bootcamp, amibroker, metastockdata. still the problem is here. manually drawn lines in charts disappear after uploading metastockdata.
i didnt find any virtualstore folder either.
is it possible that boatcamp is not reliable for amibroker?
somebody has experience with bootcamp & amibroker?
any further idea? thanks.

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