Couldn't load the captured Profiler data file consecutively without clearing the already loaded Profiler data. There are 2 Profiler data files attached as below to test this.
"001-editor.data" - Profiler data file has 3 spikes in CPU usage
"002-editor.data" - Profiler data file has 4 spikes in CPU usage

Steps to reproduce:
1. Create a new Project.
2. Windows > Analysis > Profiler.
3. In the Profiler window, load in "001-editor.data" (attached by the User), notice the 3 spikes in CPU Usage
4. Load "002-editor.data" on top, notice the 3 spikes still remains as it is.

Expected: Profiler data appears, with 4 spikes in CPU Usage
Actual: Profiler data shows 3 spikes in CPU usage.

Reproduced in: 2019.2.19f1, 2019.3.0f6 (27ab2135bccf), 2020.1.0a20.

Workaround: Clear the previously loaded profiler data and load the new file.

Could not Test in:
2018.4.16f1 (Editor immediately crashes upon loading the first data with the stack trace provided below),
2019.3.0f4 (Editor immediately crashes upon loading the first data with an empty stack trace)