Revision graph - shows nothing but one deleted item

Hello!

In one repository, I have the following paths (among others) from trunk:

trunk/Software/Application/MCU1/Source/Sources/
trunk/Software/Application/MCU1/Source/Headers/

I've attached parts of screenshots of the revision graphs I get when looking
from the three last directories in the first path. The problem is the graph
shown when creating the revision graph for the "Source" folder.

From the first screenshot (01_...), it is obvious that there are commits both
before and after revision 421. I've also attached a screenshot from the log
of the "Source" folder, which seem to function normally. At rev. 421 the
action for the "Source" folder is "Replacing". This seems correct, since I
deleted the folder entirely using TortoiseSVN and then added a new folder
with the same name.

The graph generated from "Source" is also generated from any branch, since
all our branches are taken from this folder level.

I tried the following in a local copy of the entire repository:
1. Export everything under Source/.
2. Delete the folder "Source" using TortoiseSVN-delete.
3. Commit.
4. Create and add a new folder, also named "Source".
5. Commit.
6. Copy and add the stuff I exported in step 1.
7. Commit.

After doing this, the revision graph for all three folders looked ok, but
contained no record of anything having happened before these steps. Looking
at an earlier revision in the repo browser, however, and bringing up the
revision graphs from there, I was still able to see all the history.

I have two questions about this:

1. The solution I tried (1-7 above) is acceptable to us. Is there any risk
   of causing future problems with the repository by doing that?

2. Is there a better way to fix the repository so that the problem is
   eliminated?

We're using:
TortoiseSVN 1.7.12, Build 24070 - 64 Bit
Subversion 1.7.9

Best regards
/Tomas
Olsbergs Electronics

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