Cell contents overwritten by successive cells...but maybe there's a way for it not to?

I sincerely apologize if this has been covered before. I've been searching the Internet for a while but I'm not finding the answer and I think I'm not quite sure how to ask in the search engines to find what I'm looking for.

Here is what I would like to have;
On one sheet (Tasks) in a spreadsheet, I am listing out a timeline of tasks needed to complete a project. The Phase label is in column A while the tasks and subtasks are entered into columns B and C on their own rows (I like to have the widths of columns A and B small (~15 pixels) so that they are indented below each other to show a hierarchy). Associated with each of these tasks and subtasks are start and end dates in columns D and E. I also have another sheet (Timeline) in this spreadsheet which represents the tasks in a graphical timeline-like format. I would like to have the same entries in columns A - E from the Tasks sheet 'copied' to the Timeline Sheet with the same indention format.

Here's what happens;
So the method by which I tried to 'copy' the cell data from one sheet to the other was to use this function on the cells; IF(IsBlank(Tasks!A2),"",Tasks!A2). This works that it ensures that the cell in the Timeline sheet remains 'blank', but it can really mess up the indenting thing I have going on because the cell truly isn't blank and therefore if something is entered in column B, column C with this formula takes precedence and B gets cut off. In my searches, I've learned that a formula cannot return an empty cell AND I've also learned that the fact of a formula existing in the cell will cause this problem, as well.

So, if I've what I've explained above makes any sense and someone has a way of making this work, I would really like to know it. Otherwise, I'll just manually update both lists and move on.

I do appreciate any help in advance. Thank you!

Greg

temp.xlsx

Here's an example for you to look at. See the sheet, Timeline, columns A and B end up being cut off.

Hope this makes sense.

Greg

Yes, to your first question; So basically you want, if any entry is entered in "Tasks" sheet, same info will show in sheet timeline. When I put in the simple formula, =Tasks!B6, if there is nothing in that field, it places a '0' (zero) in the cell in the Timeline sheet. So, I used the formual, =IF(IsBlank(Tasks!B6),"",Tasks!B6). This solves the problem of have a zero in the field (it's blank then), but the cell will then cut off whatever may be in the field before it because the columns are short thin (~15 pixels) in order to create that indented look. I was hoping there was some sort of way to work around this problem so that the information in the cell does get copied, but doesn't get cut off by the next cell to the right of it.

Greg