not possible to import subtitles

This thread fixed the issue!  Use the magic number in Subtitle Edit

Converted (.SRT -> Encore Subtitle text script) never Sync.

I'm dealing with the same issue involving drift.  I have a feature film that runs at 23.976 .  The editor did the subtitles in Resolve and export an SRT.  If I run the SRT through Subtitle Edit, there is an option to change from milliseconds to frames, but when I import the converted file into Encore, it starts drifting out sync to the point that the end is six seconds off. 

I'm sure it's a drop vs non-drop issue, but I'm unable to find any setting to specify. 

For import of subtitles to Encore, you have the choice of text, image, or FAB image. I assume you have text. It should be a text file in a specific format. You may need to use a third party app such as SubtitleEdit to convert. Provide a short sample of the beginning of your subtitle file and I can comment. On line help is messed up, so here is the relevant section:

Structure of script files

Script files are text-only files that are easy to write and edit in a text-editing application. For large projects, subtitling is generally handled by a subtitling house or service, which may create either text- or image-based scripts. If you want to create your own scripts or modify an existing script, it is important to understand the structure of script files.

Important: Regardless of the type of script (text or image based), always save a script as a text file (TXT). To ensure that all the characters are correctly interpreted, choose Unicode UTF-8 or UTF-16 encoding when you save. This encoding option is available for text files in most text editors, such as Microsoft Notepad or TextEdit for Mac OS.

Structure of text script files

Text script files specify the subtitle number, the start time and end time in the video, and the subtitle text. You separate each line of a clip with a return. You format the text, position the subtitles on the screen, and choose the color group when you import the file.

Text subtitle scripts should follow this format:

Subtitle_# Start_Timecode End_Timecode Subtitle_text

Additional_line_of_subtitle_text

Additional_line_of_subtitle_text

You can use either spaces or tabs to separate the elements in the script, and the Enter key to separate lines within the script. If you want to break the subtitle text into separate lines, just use the Enter key to start a new line.

Keep in mind, however, that after you import the subtitles, the point size of the text and the size of the bounding box may force the text to reflow, causing unexpected line breaks.

In this example, the following lines would form two separate clips, one at 2;02 and the second at 5;18:

1 00;00;02;02 00;00;03;15 The cat never came back.

She just walked away.

2 00;00;05;18 00;00;09;20 I hope she’s all right.

She always looked out the window with a special kind of longing.

Structure of script files
Script files are text-only files that are easy to write and edit in a text-editing application. For large projects, subtitling is generally handled by a
subtitling house or service, which may create either text- or image-based scripts. If you want to create your own scripts or modify an existing
script, it is important to understand the structure of script files.
Important: Regardless of the type of script (text or image based), always save a script as a text file (TXT). To ensure that all the characters are
correctly interpreted, choose Unicode UTF-8 or UTF-16 encoding when you save. This encoding option is available for text files in most text
editors, such as Microsoft Notepad or TextEdit for Mac OS.
Structure of text script files
Text script files specify the subtitle number, the start time and end time in the video, and the subtitle text. You separate each line of a clip with a
return. You format the text, position the subtitles on the screen, and choose the color group when you import the file.
Text subtitle scripts should follow this format:
Subtitle_# Start_Timecode End_Timecode Subtitle_text
Additional_line_of_subtitle_text
Additional_line_of_subtitle_text
You can use either spaces or tabs to separate the elements in the script, and the Enter key to separate lines within the script. If you want to break
the subtitle text into separate lines, just use the Enter key to start a new line.
Keep in mind, however, that after you import the subtitles, the point size of the text and the size of the bounding box may force the text to reflow,
causing unexpected line breaks.
In this example, the following lines would form two separate clips, one at 2;02 and the second at 5;18:
1 00;00;02;02 00;00;03;15 The cat never came back.
She just walked away.
2 00;00;05;18 00;00;09;20 I hope she’s all right.
She always looked out the window with a special kind of longing.