I would appreciate if you can reproduce the same bug.
1) Open CL 06-10
2) Select 60-minute chart
3) Draw a trendline by pressing F3, extending out from 04/06 to 04/14, as shown in Figure 1 (see the attachment)
4) Open the Property box and select "Attach to All Charts"
5) Within the SAME chart, now change the timeframe to 15-minute as shown in Figure 2
The same trendline is nowhere to be seen.


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